Home / 1,965.39-2,711.61-1,778.28

Finding the Fourth Proportional to 1,965.39, 2,711.61 and 1,778.28

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Solution

The fourth proportional to 1,965.39, 2,711.61 and 1,778.28 is: 2,453.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.39 : 2,711.61 = 1,778.28 : x
  2. Step 2: Convert to fraction form
    1,965.39/2,711.61 = 1,778.28/x
  3. Step 3: Cross multiply
    1,965.39x = 2,711.61 × 1,778.28
  4. Step 4: Simplify right side
    1,965.39x = 4,822,001.83
  5. Step 5: Solve for x
    x = 4,822,001.83/1,965.39
  6. Step 6: Final answer
    x = 2,453.46

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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.