Home / 1,976.16-2,727.36-1,911.25

Finding the Fourth Proportional to 1,976.16, 2,727.36 and 1,911.25

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Solution

The fourth proportional to 1,976.16, 2,727.36 and 1,911.25 is: 2,637.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976.16 : 2,727.36 = 1,911.25 : x
  2. Step 2: Convert to fraction form
    1,976.16/2,727.36 = 1,911.25/x
  3. Step 3: Cross multiply
    1,976.16x = 2,727.36 × 1,911.25
  4. Step 4: Simplify right side
    1,976.16x = 5,212,666.80
  5. Step 5: Solve for x
    x = 5,212,666.80/1,976.16
  6. Step 6: Final answer
    x = 2,637.78

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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.