Home / 2,896.78-3,997.28-1,637.86

Finding the Fourth Proportional to 2,896.78, 3,997.28 and 1,637.86

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Solution

The fourth proportional to 2,896.78, 3,997.28 and 1,637.86 is: 2,260.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,896.78 : 3,997.28 = 1,637.86 : x
  2. Step 2: Convert to fraction form
    2,896.78/3,997.28 = 1,637.86/x
  3. Step 3: Cross multiply
    2,896.78x = 3,997.28 × 1,637.86
  4. Step 4: Simplify right side
    2,896.78x = 6,546,985.02
  5. Step 5: Solve for x
    x = 6,546,985.02/2,896.78
  6. Step 6: Final answer
    x = 2,260.09

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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.