Home / 8,081.14-12,132.51-7,818.70

Finding the Fourth Proportional to 8,081.14, 12,132.51 and 7,818.70

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Solution

The fourth proportional to 8,081.14, 12,132.51 and 7,818.70 is: 11,738.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.14 : 12,132.51 = 7,818.70 : x
  2. Step 2: Convert to fraction form
    8,081.14/12,132.51 = 7,818.70/x
  3. Step 3: Cross multiply
    8,081.14x = 12,132.51 × 7,818.70
  4. Step 4: Simplify right side
    8,081.14x = 94,860,455.94
  5. Step 5: Solve for x
    x = 94,860,455.94/8,081.14
  6. Step 6: Final answer
    x = 11,738.50

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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.