Home / 8,138.16-12,199.05-2,871.95

Finding the Fourth Proportional to 8,138.16, 12,199.05 and 2,871.95

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Solution

The fourth proportional to 8,138.16, 12,199.05 and 2,871.95 is: 4,305.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.16 : 12,199.05 = 2,871.95 : x
  2. Step 2: Convert to fraction form
    8,138.16/12,199.05 = 2,871.95/x
  3. Step 3: Cross multiply
    8,138.16x = 12,199.05 × 2,871.95
  4. Step 4: Simplify right side
    8,138.16x = 35,035,000.65
  5. Step 5: Solve for x
    x = 35,035,000.65/8,138.16
  6. Step 6: Final answer
    x = 4,305.03

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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.