Home / 1,549.85-2,138.04-1,129.29

Finding the Fourth Proportional to 1,549.85, 2,138.04 and 1,129.29

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Solution

The fourth proportional to 1,549.85, 2,138.04 and 1,129.29 is: 1,557.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.85 : 2,138.04 = 1,129.29 : x
  2. Step 2: Convert to fraction form
    1,549.85/2,138.04 = 1,129.29/x
  3. Step 3: Cross multiply
    1,549.85x = 2,138.04 × 1,129.29
  4. Step 4: Simplify right side
    1,549.85x = 2,414,467.19
  5. Step 5: Solve for x
    x = 2,414,467.19/1,549.85
  6. Step 6: Final answer
    x = 1,557.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.