Home / 1,966.38-2,696.02-1,931.28

Finding the Fourth Proportional to 1,966.38, 2,696.02 and 1,931.28

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Solution

The fourth proportional to 1,966.38, 2,696.02 and 1,931.28 is: 2,647.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.38 : 2,696.02 = 1,931.28 : x
  2. Step 2: Convert to fraction form
    1,966.38/2,696.02 = 1,931.28/x
  3. Step 3: Cross multiply
    1,966.38x = 2,696.02 × 1,931.28
  4. Step 4: Simplify right side
    1,966.38x = 5,206,764.68
  5. Step 5: Solve for x
    x = 5,206,764.68/1,966.38
  6. Step 6: Final answer
    x = 2,647.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.