Home / 1,754.40-2,629.92-1,638.72

Finding the Fourth Proportional to 1,754.40, 2,629.92 and 1,638.72

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Solution

The fourth proportional to 1,754.40, 2,629.92 and 1,638.72 is: 2,456.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.40 : 2,629.92 = 1,638.72 : x
  2. Step 2: Convert to fraction form
    1,754.40/2,629.92 = 1,638.72/x
  3. Step 3: Cross multiply
    1,754.40x = 2,629.92 × 1,638.72
  4. Step 4: Simplify right side
    1,754.40x = 4,309,702.50
  5. Step 5: Solve for x
    x = 4,309,702.50/1,754.40
  6. Step 6: Final answer
    x = 2,456.51

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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.