Home / 1,949.40-2,690.22-1,163.34

Finding the Fourth Proportional to 1,949.40, 2,690.22 and 1,163.34

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Solution

The fourth proportional to 1,949.40, 2,690.22 and 1,163.34 is: 1,605.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.40 : 2,690.22 = 1,163.34 : x
  2. Step 2: Convert to fraction form
    1,949.40/2,690.22 = 1,163.34/x
  3. Step 3: Cross multiply
    1,949.40x = 2,690.22 × 1,163.34
  4. Step 4: Simplify right side
    1,949.40x = 3,129,640.53
  5. Step 5: Solve for x
    x = 3,129,640.53/1,949.40
  6. Step 6: Final answer
    x = 1,605.44

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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.