Home / 1,721.92-2,376.48-1,102.72

Finding the Fourth Proportional to 1,721.92, 2,376.48 and 1,102.72

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Solution

The fourth proportional to 1,721.92, 2,376.48 and 1,102.72 is: 1,521.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.92 : 2,376.48 = 1,102.72 : x
  2. Step 2: Convert to fraction form
    1,721.92/2,376.48 = 1,102.72/x
  3. Step 3: Cross multiply
    1,721.92x = 2,376.48 × 1,102.72
  4. Step 4: Simplify right side
    1,721.92x = 2,620,592.03
  5. Step 5: Solve for x
    x = 2,620,592.03/1,721.92
  6. Step 6: Final answer
    x = 1,521.90

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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.