Home / 5,318.28-7,978.68-3,372.12

Finding the Fourth Proportional to 5,318.28, 7,978.68 and 3,372.12

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Solution

The fourth proportional to 5,318.28, 7,978.68 and 3,372.12 is: 5,058.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.28 : 7,978.68 = 3,372.12 : x
  2. Step 2: Convert to fraction form
    5,318.28/7,978.68 = 3,372.12/x
  3. Step 3: Cross multiply
    5,318.28x = 7,978.68 × 3,372.12
  4. Step 4: Simplify right side
    5,318.28x = 26,905,066.40
  5. Step 5: Solve for x
    x = 26,905,066.40/5,318.28
  6. Step 6: Final answer
    x = 5,058.98

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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.