Home / 1,964.80-2,708.61-1,405.06

Finding the Fourth Proportional to 1,964.80, 2,708.61 and 1,405.06

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Solution

The fourth proportional to 1,964.80, 2,708.61 and 1,405.06 is: 1,936.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.80 : 2,708.61 = 1,405.06 : x
  2. Step 2: Convert to fraction form
    1,964.80/2,708.61 = 1,405.06/x
  3. Step 3: Cross multiply
    1,964.80x = 2,708.61 × 1,405.06
  4. Step 4: Simplify right side
    1,964.80x = 3,805,759.57
  5. Step 5: Solve for x
    x = 3,805,759.57/1,964.80
  6. Step 6: Final answer
    x = 1,936.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.