Home / 2,887.86-4,331.37-939.84

Finding the Fourth Proportional to 2,887.86, 4,331.37 and 939.84

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Solution

The fourth proportional to 2,887.86, 4,331.37 and 939.84 is: 1,409.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.86 : 4,331.37 = 939.84 : x
  2. Step 2: Convert to fraction form
    2,887.86/4,331.37 = 939.84/x
  3. Step 3: Cross multiply
    2,887.86x = 4,331.37 × 939.84
  4. Step 4: Simplify right side
    2,887.86x = 4,070,794.78
  5. Step 5: Solve for x
    x = 4,070,794.78/2,887.86
  6. Step 6: Final answer
    x = 1,409.62

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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.