Home / 1,342.14-2,013.82-1,287.48

Finding the Fourth Proportional to 1,342.14, 2,013.82 and 1,287.48

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Solution

The fourth proportional to 1,342.14, 2,013.82 and 1,287.48 is: 1,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,342.14 : 2,013.82 = 1,287.48 : x
  2. Step 2: Convert to fraction form
    1,342.14/2,013.82 = 1,287.48/x
  3. Step 3: Cross multiply
    1,342.14x = 2,013.82 × 1,287.48
  4. Step 4: Simplify right side
    1,342.14x = 2,592,752.97
  5. Step 5: Solve for x
    x = 2,592,752.97/1,342.14
  6. Step 6: Final answer
    x = 1,931.81

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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.