Home / 1,912.95-2,867.74-1,131.03

Finding the Fourth Proportional to 1,912.95, 2,867.74 and 1,131.03

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Solution

The fourth proportional to 1,912.95, 2,867.74 and 1,131.03 is: 1,695.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.95 : 2,867.74 = 1,131.03 : x
  2. Step 2: Convert to fraction form
    1,912.95/2,867.74 = 1,131.03/x
  3. Step 3: Cross multiply
    1,912.95x = 2,867.74 × 1,131.03
  4. Step 4: Simplify right side
    1,912.95x = 3,243,497.14
  5. Step 5: Solve for x
    x = 3,243,497.14/1,912.95
  6. Step 6: Final answer
    x = 1,695.55

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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.