Home / 2,175.29-3,001.91-1,291.07

Finding the Fourth Proportional to 2,175.29, 3,001.91 and 1,291.07

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Solution

The fourth proportional to 2,175.29, 3,001.91 and 1,291.07 is: 1,781.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.29 : 3,001.91 = 1,291.07 : x
  2. Step 2: Convert to fraction form
    2,175.29/3,001.91 = 1,291.07/x
  3. Step 3: Cross multiply
    2,175.29x = 3,001.91 × 1,291.07
  4. Step 4: Simplify right side
    2,175.29x = 3,875,675.94
  5. Step 5: Solve for x
    x = 3,875,675.94/2,175.29
  6. Step 6: Final answer
    x = 1,781.68

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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.