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Finding the Fourth Proportional to 8,454.56, 12,678.59 and 2,906.87

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Solution

The fourth proportional to 8,454.56, 12,678.59 and 2,906.87 is: 4,359.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,454.56 : 12,678.59 = 2,906.87 : x
  2. Step 2: Convert to fraction form
    8,454.56/12,678.59 = 2,906.87/x
  3. Step 3: Cross multiply
    8,454.56x = 12,678.59 × 2,906.87
  4. Step 4: Simplify right side
    8,454.56x = 36,854,956.79
  5. Step 5: Solve for x
    x = 36,854,956.79/8,454.56
  6. Step 6: Final answer
    x = 4,359.18

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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.