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Finding the Fourth Proportional to 2,641.73, 3,961.12 and 1,809.74

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Solution

The fourth proportional to 2,641.73, 3,961.12 and 1,809.74 is: 2,713.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641.73 : 3,961.12 = 1,809.74 : x
  2. Step 2: Convert to fraction form
    2,641.73/3,961.12 = 1,809.74/x
  3. Step 3: Cross multiply
    2,641.73x = 3,961.12 × 1,809.74
  4. Step 4: Simplify right side
    2,641.73x = 7,168,583.80
  5. Step 5: Solve for x
    x = 7,168,583.80/2,641.73
  6. Step 6: Final answer
    x = 2,713.59

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1.5x scale

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.