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Finding the Fourth Proportional to 8,305.65, 12,458.75 and 3,375.18

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Solution

The fourth proportional to 8,305.65, 12,458.75 and 3,375.18 is: 5,062.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,305.65 : 12,458.75 = 3,375.18 : x
  2. Step 2: Convert to fraction form
    8,305.65/12,458.75 = 3,375.18/x
  3. Step 3: Cross multiply
    8,305.65x = 12,458.75 × 3,375.18
  4. Step 4: Simplify right side
    8,305.65x = 42,050,506.95
  5. Step 5: Solve for x
    x = 42,050,506.95/8,305.65
  6. Step 6: Final answer
    x = 5,062.88

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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.