Home / 8,128.97-12,195.50-3,749.51

Finding the Fourth Proportional to 8,128.97, 12,195.50 and 3,749.51

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Solution

The fourth proportional to 8,128.97, 12,195.50 and 3,749.51 is: 5,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.97 : 12,195.50 = 3,749.51 : x
  2. Step 2: Convert to fraction form
    8,128.97/12,195.50 = 3,749.51/x
  3. Step 3: Cross multiply
    8,128.97x = 12,195.50 × 3,749.51
  4. Step 4: Simplify right side
    8,128.97x = 45,727,069.48
  5. Step 5: Solve for x
    x = 45,727,069.48/8,128.97
  6. Step 6: Final answer
    x = 5,625.20

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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.