Home / 3,938.48-5,906.20-1,305.16

Finding the Fourth Proportional to 3,938.48, 5,906.20 and 1,305.16

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Solution

The fourth proportional to 3,938.48, 5,906.20 and 1,305.16 is: 1,957.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.48 : 5,906.20 = 1,305.16 : x
  2. Step 2: Convert to fraction form
    3,938.48/5,906.20 = 1,305.16/x
  3. Step 3: Cross multiply
    3,938.48x = 5,906.20 × 1,305.16
  4. Step 4: Simplify right side
    3,938.48x = 7,708,535.99
  5. Step 5: Solve for x
    x = 7,708,535.99/3,938.48
  6. Step 6: Final answer
    x = 1,957.24

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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.