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Finding the Fourth Proportional to 3,613.14, 4,986.08 and 2,019.82

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Solution

The fourth proportional to 3,613.14, 4,986.08 and 2,019.82 is: 2,787.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.14 : 4,986.08 = 2,019.82 : x
  2. Step 2: Convert to fraction form
    3,613.14/4,986.08 = 2,019.82/x
  3. Step 3: Cross multiply
    3,613.14x = 4,986.08 × 2,019.82
  4. Step 4: Simplify right side
    3,613.14x = 10,070,984.11
  5. Step 5: Solve for x
    x = 10,070,984.11/3,613.14
  6. Step 6: Final answer
    x = 2,787.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.