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Finding the Fourth Proportional to 8,290.88, 12,436.32 and 2,134.88

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Solution

The fourth proportional to 8,290.88, 12,436.32 and 2,134.88 is: 3,202.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.88 : 12,436.32 = 2,134.88 : x
  2. Step 2: Convert to fraction form
    8,290.88/12,436.32 = 2,134.88/x
  3. Step 3: Cross multiply
    8,290.88x = 12,436.32 × 2,134.88
  4. Step 4: Simplify right side
    8,290.88x = 26,550,050.84
  5. Step 5: Solve for x
    x = 26,550,050.84/8,290.88
  6. Step 6: Final answer
    x = 3,202.32

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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.