Home / 9,339.38-12,888.28-5,147.63

Finding the Fourth Proportional to 9,339.38, 12,888.28 and 5,147.63

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Solution

The fourth proportional to 9,339.38, 12,888.28 and 5,147.63 is: 7,103.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.38 : 12,888.28 = 5,147.63 : x
  2. Step 2: Convert to fraction form
    9,339.38/12,888.28 = 5,147.63/x
  3. Step 3: Cross multiply
    9,339.38x = 12,888.28 × 5,147.63
  4. Step 4: Simplify right side
    9,339.38x = 66,344,096.78
  5. Step 5: Solve for x
    x = 66,344,096.78/9,339.38
  6. Step 6: Final answer
    x = 7,103.69

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Find fourth proportional to 4,669.69, 6,444.14 and 2,573.82
Half scale
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Double scale
Find fourth proportional to 9,340.38, 12,889.66 and 5,148.63
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.