Home / 7,877.97-11,817.59-2,612.79

Finding the Fourth Proportional to 7,877.97, 11,817.59 and 2,612.79

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Solution

The fourth proportional to 7,877.97, 11,817.59 and 2,612.79 is: 3,919.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.97 : 11,817.59 = 2,612.79 : x
  2. Step 2: Convert to fraction form
    7,877.97/11,817.59 = 2,612.79/x
  3. Step 3: Cross multiply
    7,877.97x = 11,817.59 × 2,612.79
  4. Step 4: Simplify right side
    7,877.97x = 30,876,867.91
  5. Step 5: Solve for x
    x = 30,876,867.91/7,877.97
  6. Step 6: Final answer
    x = 3,919.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.