Home / 8,438.26-12,660.75-3,242.74

Finding the Fourth Proportional to 8,438.26, 12,660.75 and 3,242.74

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Solution

The fourth proportional to 8,438.26, 12,660.75 and 3,242.74 is: 4,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.26 : 12,660.75 = 3,242.74 : x
  2. Step 2: Convert to fraction form
    8,438.26/12,660.75 = 3,242.74/x
  3. Step 3: Cross multiply
    8,438.26x = 12,660.75 × 3,242.74
  4. Step 4: Simplify right side
    8,438.26x = 41,055,520.46
  5. Step 5: Solve for x
    x = 41,055,520.46/8,438.26
  6. Step 6: Final answer
    x = 4,865.40

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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.