Home / 8,301.28-12,450.48-2,145.28

Finding the Fourth Proportional to 8,301.28, 12,450.48 and 2,145.28

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Solution

The fourth proportional to 8,301.28, 12,450.48 and 2,145.28 is: 3,217.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,301.28 : 12,450.48 = 2,145.28 : x
  2. Step 2: Convert to fraction form
    8,301.28/12,450.48 = 2,145.28/x
  3. Step 3: Cross multiply
    8,301.28x = 12,450.48 × 2,145.28
  4. Step 4: Simplify right side
    8,301.28x = 26,709,765.73
  5. Step 5: Solve for x
    x = 26,709,765.73/8,301.28
  6. Step 6: Final answer
    x = 3,217.55

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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.