Home / 2,896.78-3,997.31-1,637.95

Finding the Fourth Proportional to 2,896.78, 3,997.31 and 1,637.95

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Solution

The fourth proportional to 2,896.78, 3,997.31 and 1,637.95 is: 2,260.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,896.78 : 3,997.31 = 1,637.95 : x
  2. Step 2: Convert to fraction form
    2,896.78/3,997.31 = 1,637.95/x
  3. Step 3: Cross multiply
    2,896.78x = 3,997.31 × 1,637.95
  4. Step 4: Simplify right side
    2,896.78x = 6,547,365.74
  5. Step 5: Solve for x
    x = 6,547,365.74/2,896.78
  6. Step 6: Final answer
    x = 2,260.23

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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.