Home / 8,146.20-12,212.33-7,758.66

Finding the Fourth Proportional to 8,146.20, 12,212.33 and 7,758.66

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Solution

The fourth proportional to 8,146.20, 12,212.33 and 7,758.66 is: 11,631.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,146.20 : 12,212.33 = 7,758.66 : x
  2. Step 2: Convert to fraction form
    8,146.20/12,212.33 = 7,758.66/x
  3. Step 3: Cross multiply
    8,146.20x = 12,212.33 × 7,758.66
  4. Step 4: Simplify right side
    8,146.20x = 94,751,277.48
  5. Step 5: Solve for x
    x = 94,751,277.48/8,146.20
  6. Step 6: Final answer
    x = 11,631.35

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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.