Home / 2,896.80-3,997.29-1,777.79

Finding the Fourth Proportional to 2,896.80, 3,997.29 and 1,777.79

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Solution

The fourth proportional to 2,896.80, 3,997.29 and 1,777.79 is: 2,453.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,896.80 : 3,997.29 = 1,777.79 : x
  2. Step 2: Convert to fraction form
    2,896.80/3,997.29 = 1,777.79/x
  3. Step 3: Cross multiply
    2,896.80x = 3,997.29 × 1,777.79
  4. Step 4: Simplify right side
    2,896.80x = 7,106,326.36
  5. Step 5: Solve for x
    x = 7,106,326.36/2,896.80
  6. Step 6: Final answer
    x = 2,453.16

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1.5x scale

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.