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Finding the Fourth Proportional to 3,921.02, 5,407.83 and 3,447.93

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Solution

The fourth proportional to 3,921.02, 5,407.83 and 3,447.93 is: 4,755.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.02 : 5,407.83 = 3,447.93 : x
  2. Step 2: Convert to fraction form
    3,921.02/5,407.83 = 3,447.93/x
  3. Step 3: Cross multiply
    3,921.02x = 5,407.83 × 3,447.93
  4. Step 4: Simplify right side
    3,921.02x = 18,645,819.29
  5. Step 5: Solve for x
    x = 18,645,819.29/3,921.02
  6. Step 6: Final answer
    x = 4,755.36

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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.