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Finding the Fourth Proportional to 3,988.36, 5,983.74 and 1,356.36

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Solution

The fourth proportional to 3,988.36, 5,983.74 and 1,356.36 is: 2,034.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.36 : 5,983.74 = 1,356.36 : x
  2. Step 2: Convert to fraction form
    3,988.36/5,983.74 = 1,356.36/x
  3. Step 3: Cross multiply
    3,988.36x = 5,983.74 × 1,356.36
  4. Step 4: Simplify right side
    3,988.36x = 8,116,105.59
  5. Step 5: Solve for x
    x = 8,116,105.59/3,988.36
  6. Step 6: Final answer
    x = 2,034.95

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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.