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Finding the Fourth Proportional to 2,796.91, 3,860.12 and 1,805.08

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Solution

The fourth proportional to 2,796.91, 3,860.12 and 1,805.08 is: 2,491.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.91 : 3,860.12 = 1,805.08 : x
  2. Step 2: Convert to fraction form
    2,796.91/3,860.12 = 1,805.08/x
  3. Step 3: Cross multiply
    2,796.91x = 3,860.12 × 1,805.08
  4. Step 4: Simplify right side
    2,796.91x = 6,967,825.41
  5. Step 5: Solve for x
    x = 6,967,825.41/2,796.91
  6. Step 6: Final answer
    x = 2,491.26

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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.