Home / 1,912.40-2,637.43-1,381.14

Finding the Fourth Proportional to 1,912.40, 2,637.43 and 1,381.14

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Solution

The fourth proportional to 1,912.40, 2,637.43 and 1,381.14 is: 1,904.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.40 : 2,637.43 = 1,381.14 : x
  2. Step 2: Convert to fraction form
    1,912.40/2,637.43 = 1,381.14/x
  3. Step 3: Cross multiply
    1,912.40x = 2,637.43 × 1,381.14
  4. Step 4: Simplify right side
    1,912.40x = 3,642,656.62
  5. Step 5: Solve for x
    x = 3,642,656.62/1,912.40
  6. Step 6: Final answer
    x = 1,904.76

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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.