Home / 2,887.60-4,331.85-939.35

Finding the Fourth Proportional to 2,887.60, 4,331.85 and 939.35

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Solution

The fourth proportional to 2,887.60, 4,331.85 and 939.35 is: 1,409.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.60 : 4,331.85 = 939.35 : x
  2. Step 2: Convert to fraction form
    2,887.60/4,331.85 = 939.35/x
  3. Step 3: Cross multiply
    2,887.60x = 4,331.85 × 939.35
  4. Step 4: Simplify right side
    2,887.60x = 4,069,123.30
  5. Step 5: Solve for x
    x = 4,069,123.30/2,887.60
  6. Step 6: Final answer
    x = 1,409.17

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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.