Home / 5,891.20-8,121.12-4,316.80

Finding the Fourth Proportional to 5,891.20, 8,121.12 and 4,316.80

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Solution

The fourth proportional to 5,891.20, 8,121.12 and 4,316.80 is: 5,950.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,891.20 : 8,121.12 = 4,316.80 : x
  2. Step 2: Convert to fraction form
    5,891.20/8,121.12 = 4,316.80/x
  3. Step 3: Cross multiply
    5,891.20x = 8,121.12 × 4,316.80
  4. Step 4: Simplify right side
    5,891.20x = 35,057,250.82
  5. Step 5: Solve for x
    x = 35,057,250.82/5,891.20
  6. Step 6: Final answer
    x = 5,950.78

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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.