Home / 8,079.19-12,115.67-3,148.18

Finding the Fourth Proportional to 8,079.19, 12,115.67 and 3,148.18

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Solution

The fourth proportional to 8,079.19, 12,115.67 and 3,148.18 is: 4,721.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.19 : 12,115.67 = 3,148.18 : x
  2. Step 2: Convert to fraction form
    8,079.19/12,115.67 = 3,148.18/x
  3. Step 3: Cross multiply
    8,079.19x = 12,115.67 × 3,148.18
  4. Step 4: Simplify right side
    8,079.19x = 38,142,309.98
  5. Step 5: Solve for x
    x = 38,142,309.98/8,079.19
  6. Step 6: Final answer
    x = 4,721.06

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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.