Home / 3,136.72-4,707.90-1,677.12

Finding the Fourth Proportional to 3,136.72, 4,707.90 and 1,677.12

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Solution

The fourth proportional to 3,136.72, 4,707.90 and 1,677.12 is: 2,517.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.72 : 4,707.90 = 1,677.12 : x
  2. Step 2: Convert to fraction form
    3,136.72/4,707.90 = 1,677.12/x
  3. Step 3: Cross multiply
    3,136.72x = 4,707.90 × 1,677.12
  4. Step 4: Simplify right side
    3,136.72x = 7,895,713.25
  5. Step 5: Solve for x
    x = 7,895,713.25/3,136.72
  6. Step 6: Final answer
    x = 2,517.19

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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.