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Finding the Fourth Proportional to 8,118.88, 11,203.97 and 4,392.88

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Solution

The fourth proportional to 8,118.88, 11,203.97 and 4,392.88 is: 6,062.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.88 : 11,203.97 = 4,392.88 : x
  2. Step 2: Convert to fraction form
    8,118.88/11,203.97 = 4,392.88/x
  3. Step 3: Cross multiply
    8,118.88x = 11,203.97 × 4,392.88
  4. Step 4: Simplify right side
    8,118.88x = 49,217,645.76
  5. Step 5: Solve for x
    x = 49,217,645.76/8,118.88
  6. Step 6: Final answer
    x = 6,062.12

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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.