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Finding the Fourth Proportional to 1,375.65, 2,058.68 and 1,125.96

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Solution

The fourth proportional to 1,375.65, 2,058.68 and 1,125.96 is: 1,685.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375.65 : 2,058.68 = 1,125.96 : x
  2. Step 2: Convert to fraction form
    1,375.65/2,058.68 = 1,125.96/x
  3. Step 3: Cross multiply
    1,375.65x = 2,058.68 × 1,125.96
  4. Step 4: Simplify right side
    1,375.65x = 2,317,991.33
  5. Step 5: Solve for x
    x = 2,317,991.33/1,375.65
  6. Step 6: Final answer
    x = 1,685.02

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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.