Home / 1,940.56-2,679.58-1,311.14

Finding the Fourth Proportional to 1,940.56, 2,679.58 and 1,311.14

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Solution

The fourth proportional to 1,940.56, 2,679.58 and 1,311.14 is: 1,810.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.56 : 2,679.58 = 1,311.14 : x
  2. Step 2: Convert to fraction form
    1,940.56/2,679.58 = 1,311.14/x
  3. Step 3: Cross multiply
    1,940.56x = 2,679.58 × 1,311.14
  4. Step 4: Simplify right side
    1,940.56x = 3,513,297.79
  5. Step 5: Solve for x
    x = 3,513,297.79/1,940.56
  6. Step 6: Final answer
    x = 1,810.46

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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.