Home / 5,418.29-8,121.20-2,490.46

Finding the Fourth Proportional to 5,418.29, 8,121.20 and 2,490.46

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Solution

The fourth proportional to 5,418.29, 8,121.20 and 2,490.46 is: 3,732.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.29 : 8,121.20 = 2,490.46 : x
  2. Step 2: Convert to fraction form
    5,418.29/8,121.20 = 2,490.46/x
  3. Step 3: Cross multiply
    5,418.29x = 8,121.20 × 2,490.46
  4. Step 4: Simplify right side
    5,418.29x = 20,225,491.00
  5. Step 5: Solve for x
    x = 20,225,491.00/5,418.29
  6. Step 6: Final answer
    x = 3,732.82

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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.