Home / 1,965.65-2,712.61-1,126.37

Finding the Fourth Proportional to 1,965.65, 2,712.61 and 1,126.37

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Solution

The fourth proportional to 1,965.65, 2,712.61 and 1,126.37 is: 1,554.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.65 : 2,712.61 = 1,126.37 : x
  2. Step 2: Convert to fraction form
    1,965.65/2,712.61 = 1,126.37/x
  3. Step 3: Cross multiply
    1,965.65x = 2,712.61 × 1,126.37
  4. Step 4: Simplify right side
    1,965.65x = 3,055,404.38
  5. Step 5: Solve for x
    x = 3,055,404.38/1,965.65
  6. Step 6: Final answer
    x = 1,554.40

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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.