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Finding the Fourth Proportional to 8,459.94, 12,689.91 and 2,616.42

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Solution

The fourth proportional to 8,459.94, 12,689.91 and 2,616.42 is: 3,924.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.94 : 12,689.91 = 2,616.42 : x
  2. Step 2: Convert to fraction form
    8,459.94/12,689.91 = 2,616.42/x
  3. Step 3: Cross multiply
    8,459.94x = 12,689.91 × 2,616.42
  4. Step 4: Simplify right side
    8,459.94x = 33,202,134.32
  5. Step 5: Solve for x
    x = 33,202,134.32/8,459.94
  6. Step 6: Final answer
    x = 3,924.63

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Double scale
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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.