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Finding the Fourth Proportional to 2,858.54, 3,943.62 and 1,738.58

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Solution

The fourth proportional to 2,858.54, 3,943.62 and 1,738.58 is: 2,398.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.54 : 3,943.62 = 1,738.58 : x
  2. Step 2: Convert to fraction form
    2,858.54/3,943.62 = 1,738.58/x
  3. Step 3: Cross multiply
    2,858.54x = 3,943.62 × 1,738.58
  4. Step 4: Simplify right side
    2,858.54x = 6,856,279.14
  5. Step 5: Solve for x
    x = 6,856,279.14/2,858.54
  6. Step 6: Final answer
    x = 2,398.53

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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.