Home / 5,318.92-7,967.40-3,121.04

Finding the Fourth Proportional to 5,318.92, 7,967.40 and 3,121.04

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Solution

The fourth proportional to 5,318.92, 7,967.40 and 3,121.04 is: 4,675.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.92 : 7,967.40 = 3,121.04 : x
  2. Step 2: Convert to fraction form
    5,318.92/7,967.40 = 3,121.04/x
  3. Step 3: Cross multiply
    5,318.92x = 7,967.40 × 3,121.04
  4. Step 4: Simplify right side
    5,318.92x = 24,866,574.10
  5. Step 5: Solve for x
    x = 24,866,574.10/5,318.92
  6. Step 6: Final answer
    x = 4,675.12

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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.