Home / 5,324.60-7,981.98-2,721.80

Finding the Fourth Proportional to 5,324.60, 7,981.98 and 2,721.80

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Solution

The fourth proportional to 5,324.60, 7,981.98 and 2,721.80 is: 4,080.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,324.60 : 7,981.98 = 2,721.80 : x
  2. Step 2: Convert to fraction form
    5,324.60/7,981.98 = 2,721.80/x
  3. Step 3: Cross multiply
    5,324.60x = 7,981.98 × 2,721.80
  4. Step 4: Simplify right side
    5,324.60x = 21,725,353.16
  5. Step 5: Solve for x
    x = 21,725,353.16/5,324.60
  6. Step 6: Final answer
    x = 4,080.19

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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.