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Finding the Fourth Proportional to 7,620.96, 11,432.88 and 2,426.88

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Solution

The fourth proportional to 7,620.96, 11,432.88 and 2,426.88 is: 3,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.96 : 11,432.88 = 2,426.88 : x
  2. Step 2: Convert to fraction form
    7,620.96/11,432.88 = 2,426.88/x
  3. Step 3: Cross multiply
    7,620.96x = 11,432.88 × 2,426.88
  4. Step 4: Simplify right side
    7,620.96x = 27,746,227.81
  5. Step 5: Solve for x
    x = 27,746,227.81/7,620.96
  6. Step 6: Final answer
    x = 3,640.78

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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.