Home / 8,917.97-12,306.80-4,939.08

Finding the Fourth Proportional to 8,917.97, 12,306.80 and 4,939.08

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Solution

The fourth proportional to 8,917.97, 12,306.80 and 4,939.08 is: 6,815.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,917.97 : 12,306.80 = 4,939.08 : x
  2. Step 2: Convert to fraction form
    8,917.97/12,306.80 = 4,939.08/x
  3. Step 3: Cross multiply
    8,917.97x = 12,306.80 × 4,939.08
  4. Step 4: Simplify right side
    8,917.97x = 60,784,245.05
  5. Step 5: Solve for x
    x = 60,784,245.05/8,917.97
  6. Step 6: Final answer
    x = 6,815.93

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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.