Home / 8,839.64-12,185.88-6,178.79

Finding the Fourth Proportional to 8,839.64, 12,185.88 and 6,178.79

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Solution

The fourth proportional to 8,839.64, 12,185.88 and 6,178.79 is: 8,517.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,839.64 : 12,185.88 = 6,178.79 : x
  2. Step 2: Convert to fraction form
    8,839.64/12,185.88 = 6,178.79/x
  3. Step 3: Cross multiply
    8,839.64x = 12,185.88 × 6,178.79
  4. Step 4: Simplify right side
    8,839.64x = 75,294,000.78
  5. Step 5: Solve for x
    x = 75,294,000.78/8,839.64
  6. Step 6: Final answer
    x = 8,517.77

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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.