Home / 6,359.28-8,772.80-3,999.75

Finding the Fourth Proportional to 6,359.28, 8,772.80 and 3,999.75

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Solution

The fourth proportional to 6,359.28, 8,772.80 and 3,999.75 is: 5,517.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,359.28 : 8,772.80 = 3,999.75 : x
  2. Step 2: Convert to fraction form
    6,359.28/8,772.80 = 3,999.75/x
  3. Step 3: Cross multiply
    6,359.28x = 8,772.80 × 3,999.75
  4. Step 4: Simplify right side
    6,359.28x = 35,088,986.80
  5. Step 5: Solve for x
    x = 35,088,986.80/6,359.28
  6. Step 6: Final answer
    x = 5,517.76

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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.