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Finding the Fourth Proportional to 8,855.78, 13,282.13 and 3,309.17

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Solution

The fourth proportional to 8,855.78, 13,282.13 and 3,309.17 is: 4,963.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.78 : 13,282.13 = 3,309.17 : x
  2. Step 2: Convert to fraction form
    8,855.78/13,282.13 = 3,309.17/x
  3. Step 3: Cross multiply
    8,855.78x = 13,282.13 × 3,309.17
  4. Step 4: Simplify right side
    8,855.78x = 43,952,826.13
  5. Step 5: Solve for x
    x = 43,952,826.13/8,855.78
  6. Step 6: Final answer
    x = 4,963.18

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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.