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Finding the Fourth Proportional to 2,791.19, 4,186.79 and 1,252.19

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Solution

The fourth proportional to 2,791.19, 4,186.79 and 1,252.19 is: 1,878.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.19 : 4,186.79 = 1,252.19 : x
  2. Step 2: Convert to fraction form
    2,791.19/4,186.79 = 1,252.19/x
  3. Step 3: Cross multiply
    2,791.19x = 4,186.79 × 1,252.19
  4. Step 4: Simplify right side
    2,791.19x = 5,242,656.57
  5. Step 5: Solve for x
    x = 5,242,656.57/2,791.19
  6. Step 6: Final answer
    x = 1,878.29

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1.5x scale

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.