Home / 6,915.30-9,543.24-3,930.90

Finding the Fourth Proportional to 6,915.30, 9,543.24 and 3,930.90

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Solution

The fourth proportional to 6,915.30, 9,543.24 and 3,930.90 is: 5,424.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,915.30 : 9,543.24 = 3,930.90 : x
  2. Step 2: Convert to fraction form
    6,915.30/9,543.24 = 3,930.90/x
  3. Step 3: Cross multiply
    6,915.30x = 9,543.24 × 3,930.90
  4. Step 4: Simplify right side
    6,915.30x = 37,513,522.12
  5. Step 5: Solve for x
    x = 37,513,522.12/6,915.30
  6. Step 6: Final answer
    x = 5,424.71

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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.