Home / 1,947.40-2,919.97-1,331.85

Finding the Fourth Proportional to 1,947.40, 2,919.97 and 1,331.85

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Solution

The fourth proportional to 1,947.40, 2,919.97 and 1,331.85 is: 1,997.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.40 : 2,919.97 = 1,331.85 : x
  2. Step 2: Convert to fraction form
    1,947.40/2,919.97 = 1,331.85/x
  3. Step 3: Cross multiply
    1,947.40x = 2,919.97 × 1,331.85
  4. Step 4: Simplify right side
    1,947.40x = 3,888,962.04
  5. Step 5: Solve for x
    x = 3,888,962.04/1,947.40
  6. Step 6: Final answer
    x = 1,997.00

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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.