Home / 1,321.24-1,981.92-590.80

Finding the Fourth Proportional to 1,321.24, 1,981.92 and 590.80

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Solution

The fourth proportional to 1,321.24, 1,981.92 and 590.80 is: 886.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321.24 : 1,981.92 = 590.80 : x
  2. Step 2: Convert to fraction form
    1,321.24/1,981.92 = 590.80/x
  3. Step 3: Cross multiply
    1,321.24x = 1,981.92 × 590.80
  4. Step 4: Simplify right side
    1,321.24x = 1,170,918.34
  5. Step 5: Solve for x
    x = 1,170,918.34/1,321.24
  6. Step 6: Final answer
    x = 886.23

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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.