Home / 1,911.06-2,637.80-1,125.56

Finding the Fourth Proportional to 1,911.06, 2,637.80 and 1,125.56

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Solution

The fourth proportional to 1,911.06, 2,637.80 and 1,125.56 is: 1,553.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.06 : 2,637.80 = 1,125.56 : x
  2. Step 2: Convert to fraction form
    1,911.06/2,637.80 = 1,125.56/x
  3. Step 3: Cross multiply
    1,911.06x = 2,637.80 × 1,125.56
  4. Step 4: Simplify right side
    1,911.06x = 2,969,003.80
  5. Step 5: Solve for x
    x = 2,969,003.80/1,911.06
  6. Step 6: Final answer
    x = 1,553.59

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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.