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Finding the Fourth Proportional to 1,523.85, 2,284.33 and 939.10

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Solution

The fourth proportional to 1,523.85, 2,284.33 and 939.10 is: 1,407.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,523.85 : 2,284.33 = 939.10 : x
  2. Step 2: Convert to fraction form
    1,523.85/2,284.33 = 939.10/x
  3. Step 3: Cross multiply
    1,523.85x = 2,284.33 × 939.10
  4. Step 4: Simplify right side
    1,523.85x = 2,145,214.30
  5. Step 5: Solve for x
    x = 2,145,214.30/1,523.85
  6. Step 6: Final answer
    x = 1,407.76

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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.