Home / 2,887.50-4,331.52-939.18

Finding the Fourth Proportional to 2,887.50, 4,331.52 and 939.18

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Solution

The fourth proportional to 2,887.50, 4,331.52 and 939.18 is: 1,408.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.50 : 4,331.52 = 939.18 : x
  2. Step 2: Convert to fraction form
    2,887.50/4,331.52 = 939.18/x
  3. Step 3: Cross multiply
    2,887.50x = 4,331.52 × 939.18
  4. Step 4: Simplify right side
    2,887.50x = 4,068,076.95
  5. Step 5: Solve for x
    x = 4,068,076.95/2,887.50
  6. Step 6: Final answer
    x = 1,408.86

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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.