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Finding the Fourth Proportional to 2,877.72, 3,971.03 and 1,618.54

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Solution

The fourth proportional to 2,877.72, 3,971.03 and 1,618.54 is: 2,233.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.72 : 3,971.03 = 1,618.54 : x
  2. Step 2: Convert to fraction form
    2,877.72/3,971.03 = 1,618.54/x
  3. Step 3: Cross multiply
    2,877.72x = 3,971.03 × 1,618.54
  4. Step 4: Simplify right side
    2,877.72x = 6,427,270.90
  5. Step 5: Solve for x
    x = 6,427,270.90/2,877.72
  6. Step 6: Final answer
    x = 2,233.46

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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.