Home / 2,857.59-3,943.53-1,738.58

Finding the Fourth Proportional to 2,857.59, 3,943.53 and 1,738.58

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Solution

The fourth proportional to 2,857.59, 3,943.53 and 1,738.58 is: 2,399.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.59 : 3,943.53 = 1,738.58 : x
  2. Step 2: Convert to fraction form
    2,857.59/3,943.53 = 1,738.58/x
  3. Step 3: Cross multiply
    2,857.59x = 3,943.53 × 1,738.58
  4. Step 4: Simplify right side
    2,857.59x = 6,856,142.39
  5. Step 5: Solve for x
    x = 6,856,142.39/2,857.59
  6. Step 6: Final answer
    x = 2,399.27

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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.