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Finding the Fourth Proportional to 2,796.79, 4,195.18 and 1,331.50

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Solution

The fourth proportional to 2,796.79, 4,195.18 and 1,331.50 is: 1,997.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,796.79 : 4,195.18 = 1,331.50 : x
  2. Step 2: Convert to fraction form
    2,796.79/4,195.18 = 1,331.50/x
  3. Step 3: Cross multiply
    2,796.79x = 4,195.18 × 1,331.50
  4. Step 4: Simplify right side
    2,796.79x = 5,585,873.16
  5. Step 5: Solve for x
    x = 5,585,873.16/2,796.79
  6. Step 6: Final answer
    x = 1,997.25

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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.