Home / 8,757.17-12,084.40-4,979.80

Finding the Fourth Proportional to 8,757.17, 12,084.40 and 4,979.80

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Solution

The fourth proportional to 8,757.17, 12,084.40 and 4,979.80 is: 6,871.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.17 : 12,084.40 = 4,979.80 : x
  2. Step 2: Convert to fraction form
    8,757.17/12,084.40 = 4,979.80/x
  3. Step 3: Cross multiply
    8,757.17x = 12,084.40 × 4,979.80
  4. Step 4: Simplify right side
    8,757.17x = 60,177,895.12
  5. Step 5: Solve for x
    x = 60,177,895.12/8,757.17
  6. Step 6: Final answer
    x = 6,871.84

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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.