Home / 5,185.13-7,155.62-3,168.87

Finding the Fourth Proportional to 5,185.13, 7,155.62 and 3,168.87

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Solution

The fourth proportional to 5,185.13, 7,155.62 and 3,168.87 is: 4,373.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.13 : 7,155.62 = 3,168.87 : x
  2. Step 2: Convert to fraction form
    5,185.13/7,155.62 = 3,168.87/x
  3. Step 3: Cross multiply
    5,185.13x = 7,155.62 × 3,168.87
  4. Step 4: Simplify right side
    5,185.13x = 22,675,229.55
  5. Step 5: Solve for x
    x = 22,675,229.55/5,185.13
  6. Step 6: Final answer
    x = 4,373.13

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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.