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Finding the Fourth Proportional to 2,881.90, 4,322.60 and 801.86

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Solution

The fourth proportional to 2,881.90, 4,322.60 and 801.86 is: 1,202.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.90 : 4,322.60 = 801.86 : x
  2. Step 2: Convert to fraction form
    2,881.90/4,322.60 = 801.86/x
  3. Step 3: Cross multiply
    2,881.90x = 4,322.60 × 801.86
  4. Step 4: Simplify right side
    2,881.90x = 3,466,120.23
  5. Step 5: Solve for x
    x = 3,466,120.23/2,881.90
  6. Step 6: Final answer
    x = 1,202.72

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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.