Home / 1,911.50-2,637.75-1,114.97

Finding the Fourth Proportional to 1,911.50, 2,637.75 and 1,114.97

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Solution

The fourth proportional to 1,911.50, 2,637.75 and 1,114.97 is: 1,538.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.50 : 2,637.75 = 1,114.97 : x
  2. Step 2: Convert to fraction form
    1,911.50/2,637.75 = 1,114.97/x
  3. Step 3: Cross multiply
    1,911.50x = 2,637.75 × 1,114.97
  4. Step 4: Simplify right side
    1,911.50x = 2,940,998.93
  5. Step 5: Solve for x
    x = 2,940,998.93/1,911.50
  6. Step 6: Final answer
    x = 1,538.59

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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.