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Finding the Fourth Proportional to 2,585.89, 3,878.96 and 737.28

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Solution

The fourth proportional to 2,585.89, 3,878.96 and 737.28 is: 1,105.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.89 : 3,878.96 = 737.28 : x
  2. Step 2: Convert to fraction form
    2,585.89/3,878.96 = 737.28/x
  3. Step 3: Cross multiply
    2,585.89x = 3,878.96 × 737.28
  4. Step 4: Simplify right side
    2,585.89x = 2,859,863.73
  5. Step 5: Solve for x
    x = 2,859,863.73/2,585.89
  6. Step 6: Final answer
    x = 1,105.95

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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.