Home / 4,176.78-5,767.85-2,687.28

Finding the Fourth Proportional to 4,176.78, 5,767.85 and 2,687.28

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Solution

The fourth proportional to 4,176.78, 5,767.85 and 2,687.28 is: 3,710.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,176.78 : 5,767.85 = 2,687.28 : x
  2. Step 2: Convert to fraction form
    4,176.78/5,767.85 = 2,687.28/x
  3. Step 3: Cross multiply
    4,176.78x = 5,767.85 × 2,687.28
  4. Step 4: Simplify right side
    4,176.78x = 15,499,814.51
  5. Step 5: Solve for x
    x = 15,499,814.51/4,176.78
  6. Step 6: Final answer
    x = 3,710.95

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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.