Home / 3,187.17-4,397.58-2,766.78

Finding the Fourth Proportional to 3,187.17, 4,397.58 and 2,766.78

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Solution

The fourth proportional to 3,187.17, 4,397.58 and 2,766.78 is: 3,817.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.17 : 4,397.58 = 2,766.78 : x
  2. Step 2: Convert to fraction form
    3,187.17/4,397.58 = 2,766.78/x
  3. Step 3: Cross multiply
    3,187.17x = 4,397.58 × 2,766.78
  4. Step 4: Simplify right side
    3,187.17x = 12,167,136.39
  5. Step 5: Solve for x
    x = 12,167,136.39/3,187.17
  6. Step 6: Final answer
    x = 3,817.54

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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.