Home / 8,079.35-12,118.11-2,813.47

Finding the Fourth Proportional to 8,079.35, 12,118.11 and 2,813.47

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Solution

The fourth proportional to 8,079.35, 12,118.11 and 2,813.47 is: 4,219.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.35 : 12,118.11 = 2,813.47 : x
  2. Step 2: Convert to fraction form
    8,079.35/12,118.11 = 2,813.47/x
  3. Step 3: Cross multiply
    8,079.35x = 12,118.11 × 2,813.47
  4. Step 4: Simplify right side
    8,079.35x = 34,093,898.10
  5. Step 5: Solve for x
    x = 34,093,898.10/8,079.35
  6. Step 6: Final answer
    x = 4,219.88

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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.