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Finding the Fourth Proportional to 2,487.80, 3,731.70 and 2,217.26

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Solution

The fourth proportional to 2,487.80, 3,731.70 and 2,217.26 is: 3,325.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.80 : 3,731.70 = 2,217.26 : x
  2. Step 2: Convert to fraction form
    2,487.80/3,731.70 = 2,217.26/x
  3. Step 3: Cross multiply
    2,487.80x = 3,731.70 × 2,217.26
  4. Step 4: Simplify right side
    2,487.80x = 8,274,149.14
  5. Step 5: Solve for x
    x = 8,274,149.14/2,487.80
  6. Step 6: Final answer
    x = 3,325.89

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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.