Home / 1,139.04-1,712.16-1,104.48

Finding the Fourth Proportional to 1,139.04, 1,712.16 and 1,104.48

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Solution

The fourth proportional to 1,139.04, 1,712.16 and 1,104.48 is: 1,660.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139.04 : 1,712.16 = 1,104.48 : x
  2. Step 2: Convert to fraction form
    1,139.04/1,712.16 = 1,104.48/x
  3. Step 3: Cross multiply
    1,139.04x = 1,712.16 × 1,104.48
  4. Step 4: Simplify right side
    1,139.04x = 1,891,046.48
  5. Step 5: Solve for x
    x = 1,891,046.48/1,139.04
  6. Step 6: Final answer
    x = 1,660.21

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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.