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Finding the Fourth Proportional to 3,326.49, 4,990.61 and 1,135.22

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Solution

The fourth proportional to 3,326.49, 4,990.61 and 1,135.22 is: 1,703.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.49 : 4,990.61 = 1,135.22 : x
  2. Step 2: Convert to fraction form
    3,326.49/4,990.61 = 1,135.22/x
  3. Step 3: Cross multiply
    3,326.49x = 4,990.61 × 1,135.22
  4. Step 4: Simplify right side
    3,326.49x = 5,665,418.17
  5. Step 5: Solve for x
    x = 5,665,418.17/3,326.49
  6. Step 6: Final answer
    x = 1,703.12

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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.