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Finding the Fourth Proportional to 8,641.99, 12,952.05 and 5,520.79

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Solution

The fourth proportional to 8,641.99, 12,952.05 and 5,520.79 is: 8,274.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.99 : 12,952.05 = 5,520.79 : x
  2. Step 2: Convert to fraction form
    8,641.99/12,952.05 = 5,520.79/x
  3. Step 3: Cross multiply
    8,641.99x = 12,952.05 × 5,520.79
  4. Step 4: Simplify right side
    8,641.99x = 71,505,548.12
  5. Step 5: Solve for x
    x = 71,505,548.12/8,641.99
  6. Step 6: Final answer
    x = 8,274.20

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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.