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Finding the Fourth Proportional to 8,679.62, 13,019.46 and 3,484.28

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Solution

The fourth proportional to 8,679.62, 13,019.46 and 3,484.28 is: 5,226.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.62 : 13,019.46 = 3,484.28 : x
  2. Step 2: Convert to fraction form
    8,679.62/13,019.46 = 3,484.28/x
  3. Step 3: Cross multiply
    8,679.62x = 13,019.46 × 3,484.28
  4. Step 4: Simplify right side
    8,679.62x = 45,363,444.09
  5. Step 5: Solve for x
    x = 45,363,444.09/8,679.62
  6. Step 6: Final answer
    x = 5,226.43

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Similar ratio
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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.