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Finding the Fourth Proportional to 2,593.36, 3,889.08 and 861.52

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Solution

The fourth proportional to 2,593.36, 3,889.08 and 861.52 is: 1,291.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,593.36 : 3,889.08 = 861.52 : x
  2. Step 2: Convert to fraction form
    2,593.36/3,889.08 = 861.52/x
  3. Step 3: Cross multiply
    2,593.36x = 3,889.08 × 861.52
  4. Step 4: Simplify right side
    2,593.36x = 3,350,520.20
  5. Step 5: Solve for x
    x = 3,350,520.20/2,593.36
  6. Step 6: Final answer
    x = 1,291.96

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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.