Home / 3,947.40-5,919.87-1,314.29

Finding the Fourth Proportional to 3,947.40, 5,919.87 and 1,314.29

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Solution

The fourth proportional to 3,947.40, 5,919.87 and 1,314.29 is: 1,971.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.40 : 5,919.87 = 1,314.29 : x
  2. Step 2: Convert to fraction form
    3,947.40/5,919.87 = 1,314.29/x
  3. Step 3: Cross multiply
    3,947.40x = 5,919.87 × 1,314.29
  4. Step 4: Simplify right side
    3,947.40x = 7,780,440.74
  5. Step 5: Solve for x
    x = 7,780,440.74/3,947.40
  6. Step 6: Final answer
    x = 1,971.03

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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.