Home / 8,108.15-12,154.91-2,912.81

Finding the Fourth Proportional to 8,108.15, 12,154.91 and 2,912.81

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Solution

The fourth proportional to 8,108.15, 12,154.91 and 2,912.81 is: 4,366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.15 : 12,154.91 = 2,912.81 : x
  2. Step 2: Convert to fraction form
    8,108.15/12,154.91 = 2,912.81/x
  3. Step 3: Cross multiply
    8,108.15x = 12,154.91 × 2,912.81
  4. Step 4: Simplify right side
    8,108.15x = 35,404,868.06
  5. Step 5: Solve for x
    x = 35,404,868.06/8,108.15
  6. Step 6: Final answer
    x = 4,366.58

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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.