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Finding the Fourth Proportional to 3,758.65, 5,186.81 and 2,080.06

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Solution

The fourth proportional to 3,758.65, 5,186.81 and 2,080.06 is: 2,870.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,758.65 : 5,186.81 = 2,080.06 : x
  2. Step 2: Convert to fraction form
    3,758.65/5,186.81 = 2,080.06/x
  3. Step 3: Cross multiply
    3,758.65x = 5,186.81 × 2,080.06
  4. Step 4: Simplify right side
    3,758.65x = 10,788,868.24
  5. Step 5: Solve for x
    x = 10,788,868.24/3,758.65
  6. Step 6: Final answer
    x = 2,870.41

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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.