Home / 1,721.05-2,372.29-1,248.11

Finding the Fourth Proportional to 1,721.05, 2,372.29 and 1,248.11

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Solution

The fourth proportional to 1,721.05, 2,372.29 and 1,248.11 is: 1,720.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.05 : 2,372.29 = 1,248.11 : x
  2. Step 2: Convert to fraction form
    1,721.05/2,372.29 = 1,248.11/x
  3. Step 3: Cross multiply
    1,721.05x = 2,372.29 × 1,248.11
  4. Step 4: Simplify right side
    1,721.05x = 2,960,872.79
  5. Step 5: Solve for x
    x = 2,960,872.79/1,721.05
  6. Step 6: Final answer
    x = 1,720.39

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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.