Home / 3,970.31-5,956.13-1,338.05

Finding the Fourth Proportional to 3,970.31, 5,956.13 and 1,338.05

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Solution

The fourth proportional to 3,970.31, 5,956.13 and 1,338.05 is: 2,007.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.31 : 5,956.13 = 1,338.05 : x
  2. Step 2: Convert to fraction form
    3,970.31/5,956.13 = 1,338.05/x
  3. Step 3: Cross multiply
    3,970.31x = 5,956.13 × 1,338.05
  4. Step 4: Simplify right side
    3,970.31x = 7,969,563.28
  5. Step 5: Solve for x
    x = 7,969,563.28/3,970.31
  6. Step 6: Final answer
    x = 2,007.29

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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.