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Finding the Fourth Proportional to 1,549.26, 2,137.91 and 886.28

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Solution

The fourth proportional to 1,549.26, 2,137.91 and 886.28 is: 1,223.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.26 : 2,137.91 = 886.28 : x
  2. Step 2: Convert to fraction form
    1,549.26/2,137.91 = 886.28/x
  3. Step 3: Cross multiply
    1,549.26x = 2,137.91 × 886.28
  4. Step 4: Simplify right side
    1,549.26x = 1,894,771.75
  5. Step 5: Solve for x
    x = 1,894,771.75/1,549.26
  6. Step 6: Final answer
    x = 1,223.02

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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.