Home / 1,964.20-2,947.20-1,039.56

Finding the Fourth Proportional to 1,964.20, 2,947.20 and 1,039.56

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Solution

The fourth proportional to 1,964.20, 2,947.20 and 1,039.56 is: 1,559.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.20 : 2,947.20 = 1,039.56 : x
  2. Step 2: Convert to fraction form
    1,964.20/2,947.20 = 1,039.56/x
  3. Step 3: Cross multiply
    1,964.20x = 2,947.20 × 1,039.56
  4. Step 4: Simplify right side
    1,964.20x = 3,063,791.23
  5. Step 5: Solve for x
    x = 3,063,791.23/1,964.20
  6. Step 6: Final answer
    x = 1,559.82

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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.