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Finding the Fourth Proportional to 8,701.80, 13,052.70 and 4,765.20

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Solution

The fourth proportional to 8,701.80, 13,052.70 and 4,765.20 is: 7,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.80 : 13,052.70 = 4,765.20 : x
  2. Step 2: Convert to fraction form
    8,701.80/13,052.70 = 4,765.20/x
  3. Step 3: Cross multiply
    8,701.80x = 13,052.70 × 4,765.20
  4. Step 4: Simplify right side
    8,701.80x = 62,198,726.04
  5. Step 5: Solve for x
    x = 62,198,726.04/8,701.80
  6. Step 6: Final answer
    x = 7,147.80

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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.