Home / 7,142.28-10,720.33-3,447.11

Finding the Fourth Proportional to 7,142.28, 10,720.33 and 3,447.11

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Solution

The fourth proportional to 7,142.28, 10,720.33 and 3,447.11 is: 5,174.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.28 : 10,720.33 = 3,447.11 : x
  2. Step 2: Convert to fraction form
    7,142.28/10,720.33 = 3,447.11/x
  3. Step 3: Cross multiply
    7,142.28x = 10,720.33 × 3,447.11
  4. Step 4: Simplify right side
    7,142.28x = 36,954,194.32
  5. Step 5: Solve for x
    x = 36,954,194.32/7,142.28
  6. Step 6: Final answer
    x = 5,174.00

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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.