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Finding the Fourth Proportional to 3,324.48, 4,986.80 and 1,132.80

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Solution

The fourth proportional to 3,324.48, 4,986.80 and 1,132.80 is: 1,699.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,324.48 : 4,986.80 = 1,132.80 : x
  2. Step 2: Convert to fraction form
    3,324.48/4,986.80 = 1,132.80/x
  3. Step 3: Cross multiply
    3,324.48x = 4,986.80 × 1,132.80
  4. Step 4: Simplify right side
    3,324.48x = 5,649,047.04
  5. Step 5: Solve for x
    x = 5,649,047.04/3,324.48
  6. Step 6: Final answer
    x = 1,699.23

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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.