Home / 8,010.78-12,011.85-3,081.66

Finding the Fourth Proportional to 8,010.78, 12,011.85 and 3,081.66

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Solution

The fourth proportional to 8,010.78, 12,011.85 and 3,081.66 is: 4,620.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,010.78 : 12,011.85 = 3,081.66 : x
  2. Step 2: Convert to fraction form
    8,010.78/12,011.85 = 3,081.66/x
  3. Step 3: Cross multiply
    8,010.78x = 12,011.85 × 3,081.66
  4. Step 4: Simplify right side
    8,010.78x = 37,016,437.67
  5. Step 5: Solve for x
    x = 37,016,437.67/8,010.78
  6. Step 6: Final answer
    x = 4,620.83

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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.