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Finding the Fourth Proportional to 8,230.81, 12,347.40 and 2,682.78

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Solution

The fourth proportional to 8,230.81, 12,347.40 and 2,682.78 is: 4,024.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,230.81 : 12,347.40 = 2,682.78 : x
  2. Step 2: Convert to fraction form
    8,230.81/12,347.40 = 2,682.78/x
  3. Step 3: Cross multiply
    8,230.81x = 12,347.40 × 2,682.78
  4. Step 4: Simplify right side
    8,230.81x = 33,125,357.77
  5. Step 5: Solve for x
    x = 33,125,357.77/8,230.81
  6. Step 6: Final answer
    x = 4,024.56

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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.