Home / 8,184.92-12,279.18-2,990.76

Finding the Fourth Proportional to 8,184.92, 12,279.18 and 2,990.76

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Solution

The fourth proportional to 8,184.92, 12,279.18 and 2,990.76 is: 4,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,184.92 : 12,279.18 = 2,990.76 : x
  2. Step 2: Convert to fraction form
    8,184.92/12,279.18 = 2,990.76/x
  3. Step 3: Cross multiply
    8,184.92x = 12,279.18 × 2,990.76
  4. Step 4: Simplify right side
    8,184.92x = 36,724,080.38
  5. Step 5: Solve for x
    x = 36,724,080.38/8,184.92
  6. Step 6: Final answer
    x = 4,486.80

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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.