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Finding the Fourth Proportional to 3,758.74, 5,186.99 and 2,080.05

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Solution

The fourth proportional to 3,758.74, 5,186.99 and 2,080.05 is: 2,870.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,758.74 : 5,186.99 = 2,080.05 : x
  2. Step 2: Convert to fraction form
    3,758.74/5,186.99 = 2,080.05/x
  3. Step 3: Cross multiply
    3,758.74x = 5,186.99 × 2,080.05
  4. Step 4: Simplify right side
    3,758.74x = 10,789,210.55
  5. Step 5: Solve for x
    x = 10,789,210.55/3,758.74
  6. Step 6: Final answer
    x = 2,870.43

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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.