Home / 5,414.13-8,121.87-1,715.03

Finding the Fourth Proportional to 5,414.13, 8,121.87 and 1,715.03

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Solution

The fourth proportional to 5,414.13, 8,121.87 and 1,715.03 is: 2,572.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.13 : 8,121.87 = 1,715.03 : x
  2. Step 2: Convert to fraction form
    5,414.13/8,121.87 = 1,715.03/x
  3. Step 3: Cross multiply
    5,414.13x = 8,121.87 × 1,715.03
  4. Step 4: Simplify right side
    5,414.13x = 13,929,210.10
  5. Step 5: Solve for x
    x = 13,929,210.10/5,414.13
  6. Step 6: Final answer
    x = 2,572.75

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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.