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Finding the Fourth Proportional to 8,605.88, 12,908.88 and 3,924.92

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Solution

The fourth proportional to 8,605.88, 12,908.88 and 3,924.92 is: 5,887.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.88 : 12,908.88 = 3,924.92 : x
  2. Step 2: Convert to fraction form
    8,605.88/12,908.88 = 3,924.92/x
  3. Step 3: Cross multiply
    8,605.88x = 12,908.88 × 3,924.92
  4. Step 4: Simplify right side
    8,605.88x = 50,666,321.29
  5. Step 5: Solve for x
    x = 50,666,321.29/8,605.88
  6. Step 6: Final answer
    x = 5,887.41

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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.