Home / 7,155.27-9,876.96-4,172.04

Finding the Fourth Proportional to 7,155.27, 9,876.96 and 4,172.04

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Solution

The fourth proportional to 7,155.27, 9,876.96 and 4,172.04 is: 5,758.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.27 : 9,876.96 = 4,172.04 : x
  2. Step 2: Convert to fraction form
    7,155.27/9,876.96 = 4,172.04/x
  3. Step 3: Cross multiply
    7,155.27x = 9,876.96 × 4,172.04
  4. Step 4: Simplify right side
    7,155.27x = 41,207,072.20
  5. Step 5: Solve for x
    x = 41,207,072.20/7,155.27
  6. Step 6: Final answer
    x = 5,758.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.