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Finding the Fourth Proportional to 2,862.87, 3,950.49 and 1,620.87

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Solution

The fourth proportional to 2,862.87, 3,950.49 and 1,620.87 is: 2,236.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.87 : 3,950.49 = 1,620.87 : x
  2. Step 2: Convert to fraction form
    2,862.87/3,950.49 = 1,620.87/x
  3. Step 3: Cross multiply
    2,862.87x = 3,950.49 × 1,620.87
  4. Step 4: Simplify right side
    2,862.87x = 6,403,230.73
  5. Step 5: Solve for x
    x = 6,403,230.73/2,862.87
  6. Step 6: Final answer
    x = 2,236.65

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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.