Home / 1,127.30-1,691.13-579.32

Finding the Fourth Proportional to 1,127.30, 1,691.13 and 579.32

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Solution

The fourth proportional to 1,127.30, 1,691.13 and 579.32 is: 869.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.30 : 1,691.13 = 579.32 : x
  2. Step 2: Convert to fraction form
    1,127.30/1,691.13 = 579.32/x
  3. Step 3: Cross multiply
    1,127.30x = 1,691.13 × 579.32
  4. Step 4: Simplify right side
    1,127.30x = 979,696.98
  5. Step 5: Solve for x
    x = 979,696.98/1,127.30
  6. Step 6: Final answer
    x = 869.07

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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.