Home / 8,319.12-12,478.68-2,475.72

Finding the Fourth Proportional to 8,319.12, 12,478.68 and 2,475.72

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Solution

The fourth proportional to 8,319.12, 12,478.68 and 2,475.72 is: 3,713.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.12 : 12,478.68 = 2,475.72 : x
  2. Step 2: Convert to fraction form
    8,319.12/12,478.68 = 2,475.72/x
  3. Step 3: Cross multiply
    8,319.12x = 12,478.68 × 2,475.72
  4. Step 4: Simplify right side
    8,319.12x = 30,893,717.65
  5. Step 5: Solve for x
    x = 30,893,717.65/8,319.12
  6. Step 6: Final answer
    x = 3,713.58

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Similar ratio
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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.