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Finding the Fourth Proportional to 7,400.82, 11,118.47 and 7,002.71

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Solution

The fourth proportional to 7,400.82, 11,118.47 and 7,002.71 is: 10,520.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,400.82 : 11,118.47 = 7,002.71 : x
  2. Step 2: Convert to fraction form
    7,400.82/11,118.47 = 7,002.71/x
  3. Step 3: Cross multiply
    7,400.82x = 11,118.47 × 7,002.71
  4. Step 4: Simplify right side
    7,400.82x = 77,859,330.45
  5. Step 5: Solve for x
    x = 77,859,330.45/7,400.82
  6. Step 6: Final answer
    x = 10,520.37

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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.