Home / 8,106.77-12,155.28-3,170.53

Finding the Fourth Proportional to 8,106.77, 12,155.28 and 3,170.53

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Solution

The fourth proportional to 8,106.77, 12,155.28 and 3,170.53 is: 4,753.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,106.77 : 12,155.28 = 3,170.53 : x
  2. Step 2: Convert to fraction form
    8,106.77/12,155.28 = 3,170.53/x
  3. Step 3: Cross multiply
    8,106.77x = 12,155.28 × 3,170.53
  4. Step 4: Simplify right side
    8,106.77x = 38,538,619.12
  5. Step 5: Solve for x
    x = 38,538,619.12/8,106.77
  6. Step 6: Final answer
    x = 4,753.88

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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.