Home / 7,142.83-10,724.07-3,635.21

Finding the Fourth Proportional to 7,142.83, 10,724.07 and 3,635.21

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Solution

The fourth proportional to 7,142.83, 10,724.07 and 3,635.21 is: 5,457.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.83 : 10,724.07 = 3,635.21 : x
  2. Step 2: Convert to fraction form
    7,142.83/10,724.07 = 3,635.21/x
  3. Step 3: Cross multiply
    7,142.83x = 10,724.07 × 3,635.21
  4. Step 4: Simplify right side
    7,142.83x = 38,984,286.95
  5. Step 5: Solve for x
    x = 38,984,286.95/7,142.83
  6. Step 6: Final answer
    x = 5,457.82

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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.