Home / 3,723.60-5,128.08-3,251.28

Finding the Fourth Proportional to 3,723.60, 5,128.08 and 3,251.28

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Solution

The fourth proportional to 3,723.60, 5,128.08 and 3,251.28 is: 4,477.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.60 : 5,128.08 = 3,251.28 : x
  2. Step 2: Convert to fraction form
    3,723.60/5,128.08 = 3,251.28/x
  3. Step 3: Cross multiply
    3,723.60x = 5,128.08 × 3,251.28
  4. Step 4: Simplify right side
    3,723.60x = 16,672,823.94
  5. Step 5: Solve for x
    x = 16,672,823.94/3,723.60
  6. Step 6: Final answer
    x = 4,477.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.