Home / 6,839.20-9,437.48-3,854.80

Finding the Fourth Proportional to 6,839.20, 9,437.48 and 3,854.80

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Solution

The fourth proportional to 6,839.20, 9,437.48 and 3,854.80 is: 5,319.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,839.20 : 9,437.48 = 3,854.80 : x
  2. Step 2: Convert to fraction form
    6,839.20/9,437.48 = 3,854.80/x
  3. Step 3: Cross multiply
    6,839.20x = 9,437.48 × 3,854.80
  4. Step 4: Simplify right side
    6,839.20x = 36,379,597.90
  5. Step 5: Solve for x
    x = 36,379,597.90/6,839.20
  6. Step 6: Final answer
    x = 5,319.28

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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.