Home / 8,091.91-12,122.31-4,962.79

Finding the Fourth Proportional to 8,091.91, 12,122.31 and 4,962.79

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Solution

The fourth proportional to 8,091.91, 12,122.31 and 4,962.79 is: 7,434.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.91 : 12,122.31 = 4,962.79 : x
  2. Step 2: Convert to fraction form
    8,091.91/12,122.31 = 4,962.79/x
  3. Step 3: Cross multiply
    8,091.91x = 12,122.31 × 4,962.79
  4. Step 4: Simplify right side
    8,091.91x = 60,160,478.84
  5. Step 5: Solve for x
    x = 60,160,478.84/8,091.91
  6. Step 6: Final answer
    x = 7,434.65

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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.