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Finding the Fourth Proportional to 2,766.35, 4,149.52 and 916.97

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Solution

The fourth proportional to 2,766.35, 4,149.52 and 916.97 is: 1,375.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,766.35 : 4,149.52 = 916.97 : x
  2. Step 2: Convert to fraction form
    2,766.35/4,149.52 = 916.97/x
  3. Step 3: Cross multiply
    2,766.35x = 4,149.52 × 916.97
  4. Step 4: Simplify right side
    2,766.35x = 3,804,996.87
  5. Step 5: Solve for x
    x = 3,804,996.87/2,766.35
  6. Step 6: Final answer
    x = 1,375.46

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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.