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Finding the Fourth Proportional to 8,290.43, 12,429.43 and 5,002.75

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Solution

The fourth proportional to 8,290.43, 12,429.43 and 5,002.75 is: 7,500.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.43 : 12,429.43 = 5,002.75 : x
  2. Step 2: Convert to fraction form
    8,290.43/12,429.43 = 5,002.75/x
  3. Step 3: Cross multiply
    8,290.43x = 12,429.43 × 5,002.75
  4. Step 4: Simplify right side
    8,290.43x = 62,181,330.93
  5. Step 5: Solve for x
    x = 62,181,330.93/8,290.43
  6. Step 6: Final answer
    x = 7,500.37

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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.