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Finding the Fourth Proportional to 3,487.64, 5,230.48 and 1,637.80

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Solution

The fourth proportional to 3,487.64, 5,230.48 and 1,637.80 is: 2,456.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.64 : 5,230.48 = 1,637.80 : x
  2. Step 2: Convert to fraction form
    3,487.64/5,230.48 = 1,637.80/x
  3. Step 3: Cross multiply
    3,487.64x = 5,230.48 × 1,637.80
  4. Step 4: Simplify right side
    3,487.64x = 8,566,480.14
  5. Step 5: Solve for x
    x = 8,566,480.14/3,487.64
  6. Step 6: Final answer
    x = 2,456.24

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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.