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Finding the Fourth Proportional to 7,651.92, 11,412.18 and 7,520.70

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Solution

The fourth proportional to 7,651.92, 11,412.18 and 7,520.70 is: 11,216.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,651.92 : 11,412.18 = 7,520.70 : x
  2. Step 2: Convert to fraction form
    7,651.92/11,412.18 = 7,520.70/x
  3. Step 3: Cross multiply
    7,651.92x = 11,412.18 × 7,520.70
  4. Step 4: Simplify right side
    7,651.92x = 85,827,582.13
  5. Step 5: Solve for x
    x = 85,827,582.13/7,651.92
  6. Step 6: Final answer
    x = 11,216.48

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1.5x scale

Why These Related Problems?

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