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Finding the Fourth Proportional to 3,034.05, 4,551.06 and 842.78

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Solution

The fourth proportional to 3,034.05, 4,551.06 and 842.78 is: 1,264.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,034.05 : 4,551.06 = 842.78 : x
  2. Step 2: Convert to fraction form
    3,034.05/4,551.06 = 842.78/x
  3. Step 3: Cross multiply
    3,034.05x = 4,551.06 × 842.78
  4. Step 4: Simplify right side
    3,034.05x = 3,835,519.59
  5. Step 5: Solve for x
    x = 3,835,519.59/3,034.05
  6. Step 6: Final answer
    x = 1,264.16

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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.