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Finding the Fourth Proportional to 7,688.92, 11,491.25 and 5,613.30

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Solution

The fourth proportional to 7,688.92, 11,491.25 and 5,613.30 is: 8,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.92 : 11,491.25 = 5,613.30 : x
  2. Step 2: Convert to fraction form
    7,688.92/11,491.25 = 5,613.30/x
  3. Step 3: Cross multiply
    7,688.92x = 11,491.25 × 5,613.30
  4. Step 4: Simplify right side
    7,688.92x = 64,503,833.63
  5. Step 5: Solve for x
    x = 64,503,833.63/7,688.92
  6. Step 6: Final answer
    x = 8,389.19

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.