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Finding the Fourth Proportional to 8,609.59, 12,911.81 and 3,062.21

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Solution

The fourth proportional to 8,609.59, 12,911.81 and 3,062.21 is: 4,592.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.59 : 12,911.81 = 3,062.21 : x
  2. Step 2: Convert to fraction form
    8,609.59/12,911.81 = 3,062.21/x
  3. Step 3: Cross multiply
    8,609.59x = 12,911.81 × 3,062.21
  4. Step 4: Simplify right side
    8,609.59x = 39,538,593.83
  5. Step 5: Solve for x
    x = 39,538,593.83/8,609.59
  6. Step 6: Final answer
    x = 4,592.39

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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.