Home / 8,179.46-12,270.21-2,631.31

Finding the Fourth Proportional to 8,179.46, 12,270.21 and 2,631.31

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Solution

The fourth proportional to 8,179.46, 12,270.21 and 2,631.31 is: 3,947.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179.46 : 12,270.21 = 2,631.31 : x
  2. Step 2: Convert to fraction form
    8,179.46/12,270.21 = 2,631.31/x
  3. Step 3: Cross multiply
    8,179.46x = 12,270.21 × 2,631.31
  4. Step 4: Simplify right side
    8,179.46x = 32,286,727.64
  5. Step 5: Solve for x
    x = 32,286,727.64/8,179.46
  6. Step 6: Final answer
    x = 3,947.30

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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.