Home / 2,175.24-3,002.16-1,291.26

Finding the Fourth Proportional to 2,175.24, 3,002.16 and 1,291.26

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Solution

The fourth proportional to 2,175.24, 3,002.16 and 1,291.26 is: 1,782.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.24 : 3,002.16 = 1,291.26 : x
  2. Step 2: Convert to fraction form
    2,175.24/3,002.16 = 1,291.26/x
  3. Step 3: Cross multiply
    2,175.24x = 3,002.16 × 1,291.26
  4. Step 4: Simplify right side
    2,175.24x = 3,876,569.12
  5. Step 5: Solve for x
    x = 3,876,569.12/2,175.24
  6. Step 6: Final answer
    x = 1,782.13

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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.