Home / 1,965.81-2,945.07-1,347.78

Finding the Fourth Proportional to 1,965.81, 2,945.07 and 1,347.78

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Solution

The fourth proportional to 1,965.81, 2,945.07 and 1,347.78 is: 2,019.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.81 : 2,945.07 = 1,347.78 : x
  2. Step 2: Convert to fraction form
    1,965.81/2,945.07 = 1,347.78/x
  3. Step 3: Cross multiply
    1,965.81x = 2,945.07 × 1,347.78
  4. Step 4: Simplify right side
    1,965.81x = 3,969,306.44
  5. Step 5: Solve for x
    x = 3,969,306.44/1,965.81
  6. Step 6: Final answer
    x = 2,019.17

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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.