Home / 9,359.38-12,915.94-5,167.90

Finding the Fourth Proportional to 9,359.38, 12,915.94 and 5,167.90

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Solution

The fourth proportional to 9,359.38, 12,915.94 and 5,167.90 is: 7,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,359.38 : 12,915.94 = 5,167.90 : x
  2. Step 2: Convert to fraction form
    9,359.38/12,915.94 = 5,167.90/x
  3. Step 3: Cross multiply
    9,359.38x = 12,915.94 × 5,167.90
  4. Step 4: Simplify right side
    9,359.38x = 66,748,221.75
  5. Step 5: Solve for x
    x = 66,748,221.75/9,359.38
  6. Step 6: Final answer
    x = 7,131.70

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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.