Home / 1,729.91-2,387.26-983.87

Finding the Fourth Proportional to 1,729.91, 2,387.26 and 983.87

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Solution

The fourth proportional to 1,729.91, 2,387.26 and 983.87 is: 1,357.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.91 : 2,387.26 = 983.87 : x
  2. Step 2: Convert to fraction form
    1,729.91/2,387.26 = 983.87/x
  3. Step 3: Cross multiply
    1,729.91x = 2,387.26 × 983.87
  4. Step 4: Simplify right side
    1,729.91x = 2,348,753.59
  5. Step 5: Solve for x
    x = 2,348,753.59/1,729.91
  6. Step 6: Final answer
    x = 1,357.73

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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.