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Finding the Fourth Proportional to 1,754.31, 2,420.97 and 968.34

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Solution

The fourth proportional to 1,754.31, 2,420.97 and 968.34 is: 1,336.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.31 : 2,420.97 = 968.34 : x
  2. Step 2: Convert to fraction form
    1,754.31/2,420.97 = 968.34/x
  3. Step 3: Cross multiply
    1,754.31x = 2,420.97 × 968.34
  4. Step 4: Simplify right side
    1,754.31x = 2,344,322.09
  5. Step 5: Solve for x
    x = 2,344,322.09/1,754.31
  6. Step 6: Final answer
    x = 1,336.32

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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.