Home / 3,487.59-5,220.99-3,131.24

Finding the Fourth Proportional to 3,487.59, 5,220.99 and 3,131.24

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Solution

The fourth proportional to 3,487.59, 5,220.99 and 3,131.24 is: 4,687.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.59 : 5,220.99 = 3,131.24 : x
  2. Step 2: Convert to fraction form
    3,487.59/5,220.99 = 3,131.24/x
  3. Step 3: Cross multiply
    3,487.59x = 5,220.99 × 3,131.24
  4. Step 4: Simplify right side
    3,487.59x = 16,348,146.62
  5. Step 5: Solve for x
    x = 16,348,146.62/3,487.59
  6. Step 6: Final answer
    x = 4,687.52

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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.