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Finding the Fourth Proportional to 7,601.70, 11,397.03 and 5,130.42

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Solution

The fourth proportional to 7,601.70, 11,397.03 and 5,130.42 is: 7,691.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,601.70 : 11,397.03 = 5,130.42 : x
  2. Step 2: Convert to fraction form
    7,601.70/11,397.03 = 5,130.42/x
  3. Step 3: Cross multiply
    7,601.70x = 11,397.03 × 5,130.42
  4. Step 4: Simplify right side
    7,601.70x = 58,471,550.65
  5. Step 5: Solve for x
    x = 58,471,550.65/7,601.70
  6. Step 6: Final answer
    x = 7,691.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.