Home / 8,115.05-12,171.76-2,271.71

Finding the Fourth Proportional to 8,115.05, 12,171.76 and 2,271.71

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Solution

The fourth proportional to 8,115.05, 12,171.76 and 2,271.71 is: 3,407.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.05 : 12,171.76 = 2,271.71 : x
  2. Step 2: Convert to fraction form
    8,115.05/12,171.76 = 2,271.71/x
  3. Step 3: Cross multiply
    8,115.05x = 12,171.76 × 2,271.71
  4. Step 4: Simplify right side
    8,115.05x = 27,650,708.91
  5. Step 5: Solve for x
    x = 27,650,708.91/8,115.05
  6. Step 6: Final answer
    x = 3,407.34

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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.