Home / 1,696.61-2,543.38-1,078.58

Finding the Fourth Proportional to 1,696.61, 2,543.38 and 1,078.58

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Solution

The fourth proportional to 1,696.61, 2,543.38 and 1,078.58 is: 1,616.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,696.61 : 2,543.38 = 1,078.58 : x
  2. Step 2: Convert to fraction form
    1,696.61/2,543.38 = 1,078.58/x
  3. Step 3: Cross multiply
    1,696.61x = 2,543.38 × 1,078.58
  4. Step 4: Simplify right side
    1,696.61x = 2,743,238.80
  5. Step 5: Solve for x
    x = 2,743,238.80/1,696.61
  6. Step 6: Final answer
    x = 1,616.89

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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.