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Finding the Fourth Proportional to 8,855.56, 12,218.16 and 5,713.57

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Solution

The fourth proportional to 8,855.56, 12,218.16 and 5,713.57 is: 7,883.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.56 : 12,218.16 = 5,713.57 : x
  2. Step 2: Convert to fraction form
    8,855.56/12,218.16 = 5,713.57/x
  3. Step 3: Cross multiply
    8,855.56x = 12,218.16 × 5,713.57
  4. Step 4: Simplify right side
    8,855.56x = 69,809,312.43
  5. Step 5: Solve for x
    x = 69,809,312.43/8,855.56
  6. Step 6: Final answer
    x = 7,883.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.