Home / 7,318.72-10,979.24-3,159.92

Finding the Fourth Proportional to 7,318.72, 10,979.24 and 3,159.92

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Solution

The fourth proportional to 7,318.72, 10,979.24 and 3,159.92 is: 4,740.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.72 : 10,979.24 = 3,159.92 : x
  2. Step 2: Convert to fraction form
    7,318.72/10,979.24 = 3,159.92/x
  3. Step 3: Cross multiply
    7,318.72x = 10,979.24 × 3,159.92
  4. Step 4: Simplify right side
    7,318.72x = 34,693,520.06
  5. Step 5: Solve for x
    x = 34,693,520.06/7,318.72
  6. Step 6: Final answer
    x = 4,740.38

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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.