Home / 2,737.31-3,778.98-1,781.40

Finding the Fourth Proportional to 2,737.31, 3,778.98 and 1,781.40

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Solution

The fourth proportional to 2,737.31, 3,778.98 and 1,781.40 is: 2,459.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,737.31 : 3,778.98 = 1,781.40 : x
  2. Step 2: Convert to fraction form
    2,737.31/3,778.98 = 1,781.40/x
  3. Step 3: Cross multiply
    2,737.31x = 3,778.98 × 1,781.40
  4. Step 4: Simplify right side
    2,737.31x = 6,731,874.97
  5. Step 5: Solve for x
    x = 6,731,874.97/2,737.31
  6. Step 6: Final answer
    x = 2,459.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.