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Finding the Fourth Proportional to 8,074.79, 12,112.42 and 2,231.40

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Solution

The fourth proportional to 8,074.79, 12,112.42 and 2,231.40 is: 3,347.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,074.79 : 12,112.42 = 2,231.40 : x
  2. Step 2: Convert to fraction form
    8,074.79/12,112.42 = 2,231.40/x
  3. Step 3: Cross multiply
    8,074.79x = 12,112.42 × 2,231.40
  4. Step 4: Simplify right side
    8,074.79x = 27,027,642.83
  5. Step 5: Solve for x
    x = 27,027,642.83/8,074.79
  6. Step 6: Final answer
    x = 3,347.16

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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.