Home / 1,912.07-2,637.87-1,248.68

Finding the Fourth Proportional to 1,912.07, 2,637.87 and 1,248.68

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Solution

The fourth proportional to 1,912.07, 2,637.87 and 1,248.68 is: 1,722.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.07 : 2,637.87 = 1,248.68 : x
  2. Step 2: Convert to fraction form
    1,912.07/2,637.87 = 1,248.68/x
  3. Step 3: Cross multiply
    1,912.07x = 2,637.87 × 1,248.68
  4. Step 4: Simplify right side
    1,912.07x = 3,293,842.32
  5. Step 5: Solve for x
    x = 3,293,842.32/1,912.07
  6. Step 6: Final answer
    x = 1,722.66

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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.