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Finding the Fourth Proportional to 2,042.72, 3,063.51 and 561.58

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Solution

The fourth proportional to 2,042.72, 3,063.51 and 561.58 is: 842.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,042.72 : 3,063.51 = 561.58 : x
  2. Step 2: Convert to fraction form
    2,042.72/3,063.51 = 561.58/x
  3. Step 3: Cross multiply
    2,042.72x = 3,063.51 × 561.58
  4. Step 4: Simplify right side
    2,042.72x = 1,720,405.95
  5. Step 5: Solve for x
    x = 1,720,405.95/2,042.72
  6. Step 6: Final answer
    x = 842.21

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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.