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Finding the Fourth Proportional to 3,988.26, 5,983.32 and 1,214.82

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Solution

The fourth proportional to 3,988.26, 5,983.32 and 1,214.82 is: 1,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.26 : 5,983.32 = 1,214.82 : x
  2. Step 2: Convert to fraction form
    3,988.26/5,983.32 = 1,214.82/x
  3. Step 3: Cross multiply
    3,988.26x = 5,983.32 × 1,214.82
  4. Step 4: Simplify right side
    3,988.26x = 7,268,656.80
  5. Step 5: Solve for x
    x = 7,268,656.80/3,988.26
  6. Step 6: Final answer
    x = 1,822.51

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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.