Home / 3,938.73-5,908.47-1,305.67

Finding the Fourth Proportional to 3,938.73, 5,908.47 and 1,305.67

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Solution

The fourth proportional to 3,938.73, 5,908.47 and 1,305.67 is: 1,958.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.73 : 5,908.47 = 1,305.67 : x
  2. Step 2: Convert to fraction form
    3,938.73/5,908.47 = 1,305.67/x
  3. Step 3: Cross multiply
    3,938.73x = 5,908.47 × 1,305.67
  4. Step 4: Simplify right side
    3,938.73x = 7,714,507.11
  5. Step 5: Solve for x
    x = 7,714,507.11/3,938.73
  6. Step 6: Final answer
    x = 1,958.63

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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.