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Finding the Fourth Proportional to 7,658.60, 10,559.11 and 5,136.72

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Solution

The fourth proportional to 7,658.60, 10,559.11 and 5,136.72 is: 7,082.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,658.60 : 10,559.11 = 5,136.72 : x
  2. Step 2: Convert to fraction form
    7,658.60/10,559.11 = 5,136.72/x
  3. Step 3: Cross multiply
    7,658.60x = 10,559.11 × 5,136.72
  4. Step 4: Simplify right side
    7,658.60x = 54,239,148.71
  5. Step 5: Solve for x
    x = 54,239,148.71/7,658.60
  6. Step 6: Final answer
    x = 7,082.12

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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.