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Finding the Fourth Proportional to 2,585.55, 3,878.34 and 736.66

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Solution

The fourth proportional to 2,585.55, 3,878.34 and 736.66 is: 1,105.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.55 : 3,878.34 = 736.66 : x
  2. Step 2: Convert to fraction form
    2,585.55/3,878.34 = 736.66/x
  3. Step 3: Cross multiply
    2,585.55x = 3,878.34 × 736.66
  4. Step 4: Simplify right side
    2,585.55x = 2,857,024.17
  5. Step 5: Solve for x
    x = 2,857,024.17/2,585.55
  6. Step 6: Final answer
    x = 1,105.00

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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.