Home / 1,126.13-1,545.80-999.02

Finding the Fourth Proportional to 1,126.13, 1,545.80 and 999.02

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Solution

The fourth proportional to 1,126.13, 1,545.80 and 999.02 is: 1,371.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.13 : 1,545.80 = 999.02 : x
  2. Step 2: Convert to fraction form
    1,126.13/1,545.80 = 999.02/x
  3. Step 3: Cross multiply
    1,126.13x = 1,545.80 × 999.02
  4. Step 4: Simplify right side
    1,126.13x = 1,544,272.39
  5. Step 5: Solve for x
    x = 1,544,272.39/1,126.13
  6. Step 6: Final answer
    x = 1,371.31

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.