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Finding the Fourth Proportional to 2,797.81, 3,861.23 and 1,539.11

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Solution

The fourth proportional to 2,797.81, 3,861.23 and 1,539.11 is: 2,124.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,797.81 : 3,861.23 = 1,539.11 : x
  2. Step 2: Convert to fraction form
    2,797.81/3,861.23 = 1,539.11/x
  3. Step 3: Cross multiply
    2,797.81x = 3,861.23 × 1,539.11
  4. Step 4: Simplify right side
    2,797.81x = 5,942,859.66
  5. Step 5: Solve for x
    x = 5,942,859.66/2,797.81
  6. Step 6: Final answer
    x = 2,124.11

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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.