Home / 5,884.80-8,121.45-3,891.90

Finding the Fourth Proportional to 5,884.80, 8,121.45 and 3,891.90

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Solution

The fourth proportional to 5,884.80, 8,121.45 and 3,891.90 is: 5,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,884.80 : 8,121.45 = 3,891.90 : x
  2. Step 2: Convert to fraction form
    5,884.80/8,121.45 = 3,891.90/x
  3. Step 3: Cross multiply
    5,884.80x = 8,121.45 × 3,891.90
  4. Step 4: Simplify right side
    5,884.80x = 31,607,871.26
  5. Step 5: Solve for x
    x = 31,607,871.26/5,884.80
  6. Step 6: Final answer
    x = 5,371.10

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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.