Home / 1,325.04-1,976.12-1,131.27

Finding the Fourth Proportional to 1,325.04, 1,976.12 and 1,131.27

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Solution

The fourth proportional to 1,325.04, 1,976.12 and 1,131.27 is: 1,687.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325.04 : 1,976.12 = 1,131.27 : x
  2. Step 2: Convert to fraction form
    1,325.04/1,976.12 = 1,131.27/x
  3. Step 3: Cross multiply
    1,325.04x = 1,976.12 × 1,131.27
  4. Step 4: Simplify right side
    1,325.04x = 2,235,519.62
  5. Step 5: Solve for x
    x = 2,235,519.62/1,325.04
  6. Step 6: Final answer
    x = 1,687.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.