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Finding the Fourth Proportional to 2,805.95, 3,872.42 and 1,627.01

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Solution

The fourth proportional to 2,805.95, 3,872.42 and 1,627.01 is: 2,245.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.95 : 3,872.42 = 1,627.01 : x
  2. Step 2: Convert to fraction form
    2,805.95/3,872.42 = 1,627.01/x
  3. Step 3: Cross multiply
    2,805.95x = 3,872.42 × 1,627.01
  4. Step 4: Simplify right side
    2,805.95x = 6,300,438.57
  5. Step 5: Solve for x
    x = 6,300,438.57/2,805.95
  6. Step 6: Final answer
    x = 2,245.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.