Home / 1,950.21-2,691.77-1,288.17

Finding the Fourth Proportional to 1,950.21, 2,691.77 and 1,288.17

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Solution

The fourth proportional to 1,950.21, 2,691.77 and 1,288.17 is: 1,777.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,950.21 : 2,691.77 = 1,288.17 : x
  2. Step 2: Convert to fraction form
    1,950.21/2,691.77 = 1,288.17/x
  3. Step 3: Cross multiply
    1,950.21x = 2,691.77 × 1,288.17
  4. Step 4: Simplify right side
    1,950.21x = 3,467,450.92
  5. Step 5: Solve for x
    x = 3,467,450.92/1,950.21
  6. Step 6: Final answer
    x = 1,777.99

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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.