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Finding the Fourth Proportional to 2,881.75, 4,318.57 and 1,647.31

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Solution

The fourth proportional to 2,881.75, 4,318.57 and 1,647.31 is: 2,468.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.75 : 4,318.57 = 1,647.31 : x
  2. Step 2: Convert to fraction form
    2,881.75/4,318.57 = 1,647.31/x
  3. Step 3: Cross multiply
    2,881.75x = 4,318.57 × 1,647.31
  4. Step 4: Simplify right side
    2,881.75x = 7,113,993.72
  5. Step 5: Solve for x
    x = 7,113,993.72/2,881.75
  6. Step 6: Final answer
    x = 2,468.64

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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.