Home / 8,631.83-12,947.21-3,084.90

Finding the Fourth Proportional to 8,631.83, 12,947.21 and 3,084.90

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Solution

The fourth proportional to 8,631.83, 12,947.21 and 3,084.90 is: 4,627.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.83 : 12,947.21 = 3,084.90 : x
  2. Step 2: Convert to fraction form
    8,631.83/12,947.21 = 3,084.90/x
  3. Step 3: Cross multiply
    8,631.83x = 12,947.21 × 3,084.90
  4. Step 4: Simplify right side
    8,631.83x = 39,940,795.72
  5. Step 5: Solve for x
    x = 39,940,795.72/8,631.83
  6. Step 6: Final answer
    x = 4,627.15

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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.