Home / 5,158.82-7,122.87-3,172.04

Finding the Fourth Proportional to 5,158.82, 7,122.87 and 3,172.04

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Solution

The fourth proportional to 5,158.82, 7,122.87 and 3,172.04 is: 4,379.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.82 : 7,122.87 = 3,172.04 : x
  2. Step 2: Convert to fraction form
    5,158.82/7,122.87 = 3,172.04/x
  3. Step 3: Cross multiply
    5,158.82x = 7,122.87 × 3,172.04
  4. Step 4: Simplify right side
    5,158.82x = 22,594,028.55
  5. Step 5: Solve for x
    x = 22,594,028.55/5,158.82
  6. Step 6: Final answer
    x = 4,379.69

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1.5x scale

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.