Home / 1,942.74-2,909.36-1,247.22

Finding the Fourth Proportional to 1,942.74, 2,909.36 and 1,247.22

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Solution

The fourth proportional to 1,942.74, 2,909.36 and 1,247.22 is: 1,867.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.74 : 2,909.36 = 1,247.22 : x
  2. Step 2: Convert to fraction form
    1,942.74/2,909.36 = 1,247.22/x
  3. Step 3: Cross multiply
    1,942.74x = 2,909.36 × 1,247.22
  4. Step 4: Simplify right side
    1,942.74x = 3,628,611.98
  5. Step 5: Solve for x
    x = 3,628,611.98/1,942.74
  6. Step 6: Final answer
    x = 1,867.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.