Home / 6,412.80-8,851.68-3,761.28

Finding the Fourth Proportional to 6,412.80, 8,851.68 and 3,761.28

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Solution

The fourth proportional to 6,412.80, 8,851.68 and 3,761.28 is: 5,191.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,412.80 : 8,851.68 = 3,761.28 : x
  2. Step 2: Convert to fraction form
    6,412.80/8,851.68 = 3,761.28/x
  3. Step 3: Cross multiply
    6,412.80x = 8,851.68 × 3,761.28
  4. Step 4: Simplify right side
    6,412.80x = 33,293,646.95
  5. Step 5: Solve for x
    x = 33,293,646.95/6,412.80
  6. Step 6: Final answer
    x = 5,191.75

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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.