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Finding the Fourth Proportional to 1,947.95, 2,922.68 and 852.47

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Solution

The fourth proportional to 1,947.95, 2,922.68 and 852.47 is: 1,279.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.95 : 2,922.68 = 852.47 : x
  2. Step 2: Convert to fraction form
    1,947.95/2,922.68 = 852.47/x
  3. Step 3: Cross multiply
    1,947.95x = 2,922.68 × 852.47
  4. Step 4: Simplify right side
    1,947.95x = 2,491,511.94
  5. Step 5: Solve for x
    x = 2,491,511.94/1,947.95
  6. Step 6: Final answer
    x = 1,279.04

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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.