Home / 8,191.23-12,288.46-2,645.97

Finding the Fourth Proportional to 8,191.23, 12,288.46 and 2,645.97

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Solution

The fourth proportional to 8,191.23, 12,288.46 and 2,645.97 is: 3,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.23 : 12,288.46 = 2,645.97 : x
  2. Step 2: Convert to fraction form
    8,191.23/12,288.46 = 2,645.97/x
  3. Step 3: Cross multiply
    8,191.23x = 12,288.46 × 2,645.97
  4. Step 4: Simplify right side
    8,191.23x = 32,514,848.77
  5. Step 5: Solve for x
    x = 32,514,848.77/8,191.23
  6. Step 6: Final answer
    x = 3,969.47

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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.