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Finding the Fourth Proportional to 3,759.99, 5,189.24 and 2,145.29

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Solution

The fourth proportional to 3,759.99, 5,189.24 and 2,145.29 is: 2,960.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.99 : 5,189.24 = 2,145.29 : x
  2. Step 2: Convert to fraction form
    3,759.99/5,189.24 = 2,145.29/x
  3. Step 3: Cross multiply
    3,759.99x = 5,189.24 × 2,145.29
  4. Step 4: Simplify right side
    3,759.99x = 11,132,445.70
  5. Step 5: Solve for x
    x = 11,132,445.70/3,759.99
  6. Step 6: Final answer
    x = 2,960.77

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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.