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Finding the Fourth Proportional to 1,627.70, 2,443.50 and 1,080.95

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Solution

The fourth proportional to 1,627.70, 2,443.50 and 1,080.95 is: 1,622.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.70 : 2,443.50 = 1,080.95 : x
  2. Step 2: Convert to fraction form
    1,627.70/2,443.50 = 1,080.95/x
  3. Step 3: Cross multiply
    1,627.70x = 2,443.50 × 1,080.95
  4. Step 4: Simplify right side
    1,627.70x = 2,641,289.11
  5. Step 5: Solve for x
    x = 2,641,289.11/1,627.70
  6. Step 6: Final answer
    x = 1,622.72

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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.