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Finding the Fourth Proportional to 1,721.48, 2,376.48 and 1,058.48

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Solution

The fourth proportional to 1,721.48, 2,376.48 and 1,058.48 is: 1,461.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.48 : 2,376.48 = 1,058.48 : x
  2. Step 2: Convert to fraction form
    1,721.48/2,376.48 = 1,058.48/x
  3. Step 3: Cross multiply
    1,721.48x = 2,376.48 × 1,058.48
  4. Step 4: Simplify right side
    1,721.48x = 2,515,456.55
  5. Step 5: Solve for x
    x = 2,515,456.55/1,721.48
  6. Step 6: Final answer
    x = 1,461.22

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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.