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Finding the Fourth Proportional to 2,860.83, 3,949.83 and 2,201.13

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Solution

The fourth proportional to 2,860.83, 3,949.83 and 2,201.13 is: 3,039.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.83 : 3,949.83 = 2,201.13 : x
  2. Step 2: Convert to fraction form
    2,860.83/3,949.83 = 2,201.13/x
  3. Step 3: Cross multiply
    2,860.83x = 3,949.83 × 2,201.13
  4. Step 4: Simplify right side
    2,860.83x = 8,694,089.31
  5. Step 5: Solve for x
    x = 8,694,089.31/2,860.83
  6. Step 6: Final answer
    x = 3,039.01

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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.