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Finding the Fourth Proportional to 8,248.32, 12,372.48 and 2,405.40

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Solution

The fourth proportional to 8,248.32, 12,372.48 and 2,405.40 is: 3,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,248.32 : 12,372.48 = 2,405.40 : x
  2. Step 2: Convert to fraction form
    8,248.32/12,372.48 = 2,405.40/x
  3. Step 3: Cross multiply
    8,248.32x = 12,372.48 × 2,405.40
  4. Step 4: Simplify right side
    8,248.32x = 29,760,763.39
  5. Step 5: Solve for x
    x = 29,760,763.39/8,248.32
  6. Step 6: Final answer
    x = 3,608.10

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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.