Home / 1,242.30-1,713.38-1,092.60

Finding the Fourth Proportional to 1,242.30, 1,713.38 and 1,092.60

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Solution

The fourth proportional to 1,242.30, 1,713.38 and 1,092.60 is: 1,506.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242.30 : 1,713.38 = 1,092.60 : x
  2. Step 2: Convert to fraction form
    1,242.30/1,713.38 = 1,092.60/x
  3. Step 3: Cross multiply
    1,242.30x = 1,713.38 × 1,092.60
  4. Step 4: Simplify right side
    1,242.30x = 1,872,033.53
  5. Step 5: Solve for x
    x = 1,872,033.53/1,242.30
  6. Step 6: Final answer
    x = 1,506.91

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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.