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Finding the Fourth Proportional to 2,772.78, 4,159.20 and 1,041

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Solution

The fourth proportional to 2,772.78, 4,159.20 and 1,041 is: 1,561.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.78 : 4,159.20 = 1,041 : x
  2. Step 2: Convert to fraction form
    2,772.78/4,159.20 = 1,041/x
  3. Step 3: Cross multiply
    2,772.78x = 4,159.20 × 1,041
  4. Step 4: Simplify right side
    2,772.78x = 4,329,727.20
  5. Step 5: Solve for x
    x = 4,329,727.20/2,772.78
  6. Step 6: Final answer
    x = 1,561.51

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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.