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Finding the Fourth Proportional to 2,796.40, 4,193.22 and 1,040.88

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Solution

The fourth proportional to 2,796.40, 4,193.22 and 1,040.88 is: 1,560.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.40 : 4,193.22 = 1,040.88 : x
  2. Step 2: Convert to fraction form
    2,796.40/4,193.22 = 1,040.88/x
  3. Step 3: Cross multiply
    2,796.40x = 4,193.22 × 1,040.88
  4. Step 4: Simplify right side
    2,796.40x = 4,364,638.83
  5. Step 5: Solve for x
    x = 4,364,638.83/2,796.40
  6. Step 6: Final answer
    x = 1,560.81

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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.