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Finding the Fourth Proportional to 7,613.92, 10,515.18 and 6,789.52

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Solution

The fourth proportional to 7,613.92, 10,515.18 and 6,789.52 is: 9,376.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,613.92 : 10,515.18 = 6,789.52 : x
  2. Step 2: Convert to fraction form
    7,613.92/10,515.18 = 6,789.52/x
  3. Step 3: Cross multiply
    7,613.92x = 10,515.18 × 6,789.52
  4. Step 4: Simplify right side
    7,613.92x = 71,393,024.91
  5. Step 5: Solve for x
    x = 71,393,024.91/7,613.92
  6. Step 6: Final answer
    x = 9,376.65

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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.