Home / 3,696.12-5,542.56-1,386

Finding the Fourth Proportional to 3,696.12, 5,542.56 and 1,386

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Solution

The fourth proportional to 3,696.12, 5,542.56 and 1,386 is: 2,078.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,696.12 : 5,542.56 = 1,386 : x
  2. Step 2: Convert to fraction form
    3,696.12/5,542.56 = 1,386/x
  3. Step 3: Cross multiply
    3,696.12x = 5,542.56 × 1,386
  4. Step 4: Simplify right side
    3,696.12x = 7,681,988.16
  5. Step 5: Solve for x
    x = 7,681,988.16/3,696.12
  6. Step 6: Final answer
    x = 2,078.39

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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.