Home / 3,938.49-5,906.27-1,305.51

Finding the Fourth Proportional to 3,938.49, 5,906.27 and 1,305.51

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Solution

The fourth proportional to 3,938.49, 5,906.27 and 1,305.51 is: 1,957.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.49 : 5,906.27 = 1,305.51 : x
  2. Step 2: Convert to fraction form
    3,938.49/5,906.27 = 1,305.51/x
  3. Step 3: Cross multiply
    3,938.49x = 5,906.27 × 1,305.51
  4. Step 4: Simplify right side
    3,938.49x = 7,710,688.02
  5. Step 5: Solve for x
    x = 7,710,688.02/3,938.49
  6. Step 6: Final answer
    x = 1,957.78

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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.