Home / 8,231.11-12,346.54-1,991.08

Finding the Fourth Proportional to 8,231.11, 12,346.54 and 1,991.08

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Solution

The fourth proportional to 8,231.11, 12,346.54 and 1,991.08 is: 2,986.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,231.11 : 12,346.54 = 1,991.08 : x
  2. Step 2: Convert to fraction form
    8,231.11/12,346.54 = 1,991.08/x
  3. Step 3: Cross multiply
    8,231.11x = 12,346.54 × 1,991.08
  4. Step 4: Simplify right side
    8,231.11x = 24,582,948.86
  5. Step 5: Solve for x
    x = 24,582,948.86/8,231.11
  6. Step 6: Final answer
    x = 2,986.59

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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.