Home / 1,190.66-1,785.98-1,127.48

Finding the Fourth Proportional to 1,190.66, 1,785.98 and 1,127.48

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Solution

The fourth proportional to 1,190.66, 1,785.98 and 1,127.48 is: 1,691.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.66 : 1,785.98 = 1,127.48 : x
  2. Step 2: Convert to fraction form
    1,190.66/1,785.98 = 1,127.48/x
  3. Step 3: Cross multiply
    1,190.66x = 1,785.98 × 1,127.48
  4. Step 4: Simplify right side
    1,190.66x = 2,013,650.62
  5. Step 5: Solve for x
    x = 2,013,650.62/1,190.66
  6. Step 6: Final answer
    x = 1,691.21

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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.