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Finding the Fourth Proportional to 8,321.59, 12,484.55 and 4,161.43

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Solution

The fourth proportional to 8,321.59, 12,484.55 and 4,161.43 is: 6,243.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.59 : 12,484.55 = 4,161.43 : x
  2. Step 2: Convert to fraction form
    8,321.59/12,484.55 = 4,161.43/x
  3. Step 3: Cross multiply
    8,321.59x = 12,484.55 × 4,161.43
  4. Step 4: Simplify right side
    8,321.59x = 51,953,580.91
  5. Step 5: Solve for x
    x = 51,953,580.91/8,321.59
  6. Step 6: Final answer
    x = 6,243.23

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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.