Home / 1,080.40-1,491.24-932.44

Finding the Fourth Proportional to 1,080.40, 1,491.24 and 932.44

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Solution

The fourth proportional to 1,080.40, 1,491.24 and 932.44 is: 1,287.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.40 : 1,491.24 = 932.44 : x
  2. Step 2: Convert to fraction form
    1,080.40/1,491.24 = 932.44/x
  3. Step 3: Cross multiply
    1,080.40x = 1,491.24 × 932.44
  4. Step 4: Simplify right side
    1,080.40x = 1,390,491.83
  5. Step 5: Solve for x
    x = 1,390,491.83/1,080.40
  6. Step 6: Final answer
    x = 1,287.02

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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.