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Finding the Fourth Proportional to 5,678.92, 8,518.96 and 2,171.88

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Solution

The fourth proportional to 5,678.92, 8,518.96 and 2,171.88 is: 3,258.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.92 : 8,518.96 = 2,171.88 : x
  2. Step 2: Convert to fraction form
    5,678.92/8,518.96 = 2,171.88/x
  3. Step 3: Cross multiply
    5,678.92x = 8,518.96 × 2,171.88
  4. Step 4: Simplify right side
    5,678.92x = 18,502,158.84
  5. Step 5: Solve for x
    x = 18,502,158.84/5,678.92
  6. Step 6: Final answer
    x = 3,258.04

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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.