Home / 8,456.13-12,682.28-3,191.70

Finding the Fourth Proportional to 8,456.13, 12,682.28 and 3,191.70

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Solution

The fourth proportional to 8,456.13, 12,682.28 and 3,191.70 is: 4,786.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.13 : 12,682.28 = 3,191.70 : x
  2. Step 2: Convert to fraction form
    8,456.13/12,682.28 = 3,191.70/x
  3. Step 3: Cross multiply
    8,456.13x = 12,682.28 × 3,191.70
  4. Step 4: Simplify right side
    8,456.13x = 40,478,017.12
  5. Step 5: Solve for x
    x = 40,478,017.12/8,456.13
  6. Step 6: Final answer
    x = 4,786.83

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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.