Home / 1,721.30-2,375.20-1,058.18

Finding the Fourth Proportional to 1,721.30, 2,375.20 and 1,058.18

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Solution

The fourth proportional to 1,721.30, 2,375.20 and 1,058.18 is: 1,460.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.30 : 2,375.20 = 1,058.18 : x
  2. Step 2: Convert to fraction form
    1,721.30/2,375.20 = 1,058.18/x
  3. Step 3: Cross multiply
    1,721.30x = 2,375.20 × 1,058.18
  4. Step 4: Simplify right side
    1,721.30x = 2,513,389.14
  5. Step 5: Solve for x
    x = 2,513,389.14/1,721.30
  6. Step 6: Final answer
    x = 1,460.17

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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.