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Finding the Fourth Proportional to 8,902.80, 13,350.15 and 3,969.90

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Solution

The fourth proportional to 8,902.80, 13,350.15 and 3,969.90 is: 5,953.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,902.80 : 13,350.15 = 3,969.90 : x
  2. Step 2: Convert to fraction form
    8,902.80/13,350.15 = 3,969.90/x
  3. Step 3: Cross multiply
    8,902.80x = 13,350.15 × 3,969.90
  4. Step 4: Simplify right side
    8,902.80x = 52,998,760.49
  5. Step 5: Solve for x
    x = 52,998,760.49/8,902.80
  6. Step 6: Final answer
    x = 5,953.04

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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.