Home / 2,936.79-4,061.78-2,887.58

Finding the Fourth Proportional to 2,936.79, 4,061.78 and 2,887.58

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Solution

The fourth proportional to 2,936.79, 4,061.78 and 2,887.58 is: 3,993.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,936.79 : 4,061.78 = 2,887.58 : x
  2. Step 2: Convert to fraction form
    2,936.79/4,061.78 = 2,887.58/x
  3. Step 3: Cross multiply
    2,936.79x = 4,061.78 × 2,887.58
  4. Step 4: Simplify right side
    2,936.79x = 11,728,721.24
  5. Step 5: Solve for x
    x = 11,728,721.24/2,936.79
  6. Step 6: Final answer
    x = 3,993.72

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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.