Home / 9,115.38-12,579.23-4,923.63

Finding the Fourth Proportional to 9,115.38, 12,579.23 and 4,923.63

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Solution

The fourth proportional to 9,115.38, 12,579.23 and 4,923.63 is: 6,794.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.38 : 12,579.23 = 4,923.63 : x
  2. Step 2: Convert to fraction form
    9,115.38/12,579.23 = 4,923.63/x
  3. Step 3: Cross multiply
    9,115.38x = 12,579.23 × 4,923.63
  4. Step 4: Simplify right side
    9,115.38x = 61,935,474.20
  5. Step 5: Solve for x
    x = 61,935,474.20/9,115.38
  6. Step 6: Final answer
    x = 6,794.61

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Find fourth proportional to 4,557.69, 6,289.62 and 2,461.82
Half scale
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Double scale
Find fourth proportional to 9,116.38, 12,580.61 and 4,924.63
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.