Home / 9,187.38-12,678.58-4,995.62

Finding the Fourth Proportional to 9,187.38, 12,678.58 and 4,995.62

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Solution

The fourth proportional to 9,187.38, 12,678.58 and 4,995.62 is: 6,893.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,187.38 : 12,678.58 = 4,995.62 : x
  2. Step 2: Convert to fraction form
    9,187.38/12,678.58 = 4,995.62/x
  3. Step 3: Cross multiply
    9,187.38x = 12,678.58 × 4,995.62
  4. Step 4: Simplify right side
    9,187.38x = 63,337,367.82
  5. Step 5: Solve for x
    x = 63,337,367.82/9,187.38
  6. Step 6: Final answer
    x = 6,893.95

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Half scale
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Double scale
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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.