Home / 1,964.40-2,941.74-1,231.80

Finding the Fourth Proportional to 1,964.40, 2,941.74 and 1,231.80

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Solution

The fourth proportional to 1,964.40, 2,941.74 and 1,231.80 is: 1,844.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.40 : 2,941.74 = 1,231.80 : x
  2. Step 2: Convert to fraction form
    1,964.40/2,941.74 = 1,231.80/x
  3. Step 3: Cross multiply
    1,964.40x = 2,941.74 × 1,231.80
  4. Step 4: Simplify right side
    1,964.40x = 3,623,635.33
  5. Step 5: Solve for x
    x = 3,623,635.33/1,964.40
  6. Step 6: Final answer
    x = 1,844.65

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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.