Home / 1,694.86-2,538.66-1,279.42

Finding the Fourth Proportional to 1,694.86, 2,538.66 and 1,279.42

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Solution

The fourth proportional to 1,694.86, 2,538.66 and 1,279.42 is: 1,916.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,694.86 : 2,538.66 = 1,279.42 : x
  2. Step 2: Convert to fraction form
    1,694.86/2,538.66 = 1,279.42/x
  3. Step 3: Cross multiply
    1,694.86x = 2,538.66 × 1,279.42
  4. Step 4: Simplify right side
    1,694.86x = 3,248,012.38
  5. Step 5: Solve for x
    x = 3,248,012.38/1,694.86
  6. Step 6: Final answer
    x = 1,916.39

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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.