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Finding the Fourth Proportional to 2,882.87, 3,976.23 and 1,986.89

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Solution

The fourth proportional to 2,882.87, 3,976.23 and 1,986.89 is: 2,740.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,882.87 : 3,976.23 = 1,986.89 : x
  2. Step 2: Convert to fraction form
    2,882.87/3,976.23 = 1,986.89/x
  3. Step 3: Cross multiply
    2,882.87x = 3,976.23 × 1,986.89
  4. Step 4: Simplify right side
    2,882.87x = 7,900,331.63
  5. Step 5: Solve for x
    x = 7,900,331.63/2,882.87
  6. Step 6: Final answer
    x = 2,740.44

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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.