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Finding the Fourth Proportional to 1,523.75, 2,279.21 and 1,412.96

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Solution

The fourth proportional to 1,523.75, 2,279.21 and 1,412.96 is: 2,113.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,523.75 : 2,279.21 = 1,412.96 : x
  2. Step 2: Convert to fraction form
    1,523.75/2,279.21 = 1,412.96/x
  3. Step 3: Cross multiply
    1,523.75x = 2,279.21 × 1,412.96
  4. Step 4: Simplify right side
    1,523.75x = 3,220,414.10
  5. Step 5: Solve for x
    x = 3,220,414.10/1,523.75
  6. Step 6: Final answer
    x = 2,113.49

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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.