Home / 8,581.22-12,870.60-3,318.70

Finding the Fourth Proportional to 8,581.22, 12,870.60 and 3,318.70

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Solution

The fourth proportional to 8,581.22, 12,870.60 and 3,318.70 is: 4,977.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,581.22 : 12,870.60 = 3,318.70 : x
  2. Step 2: Convert to fraction form
    8,581.22/12,870.60 = 3,318.70/x
  3. Step 3: Cross multiply
    8,581.22x = 12,870.60 × 3,318.70
  4. Step 4: Simplify right side
    8,581.22x = 42,713,660.22
  5. Step 5: Solve for x
    x = 42,713,660.22/8,581.22
  6. Step 6: Final answer
    x = 4,977.57

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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.