Home / 2,887.29-4,331.16-939.42

Finding the Fourth Proportional to 2,887.29, 4,331.16 and 939.42

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Solution

The fourth proportional to 2,887.29, 4,331.16 and 939.42 is: 1,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.29 : 4,331.16 = 939.42 : x
  2. Step 2: Convert to fraction form
    2,887.29/4,331.16 = 939.42/x
  3. Step 3: Cross multiply
    2,887.29x = 4,331.16 × 939.42
  4. Step 4: Simplify right side
    2,887.29x = 4,068,778.33
  5. Step 5: Solve for x
    x = 4,068,778.33/2,887.29
  6. Step 6: Final answer
    x = 1,409.20

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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.