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Finding the Fourth Proportional to 2,351.97, 3,531.74 and 1,940.22

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Solution

The fourth proportional to 2,351.97, 3,531.74 and 1,940.22 is: 2,913.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.97 : 3,531.74 = 1,940.22 : x
  2. Step 2: Convert to fraction form
    2,351.97/3,531.74 = 1,940.22/x
  3. Step 3: Cross multiply
    2,351.97x = 3,531.74 × 1,940.22
  4. Step 4: Simplify right side
    2,351.97x = 6,852,342.88
  5. Step 5: Solve for x
    x = 6,852,342.88/2,351.97
  6. Step 6: Final answer
    x = 2,913.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.