Home / 2,175.94-3,003.26-1,389.85

Finding the Fourth Proportional to 2,175.94, 3,003.26 and 1,389.85

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Solution

The fourth proportional to 2,175.94, 3,003.26 and 1,389.85 is: 1,918.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.94 : 3,003.26 = 1,389.85 : x
  2. Step 2: Convert to fraction form
    2,175.94/3,003.26 = 1,389.85/x
  3. Step 3: Cross multiply
    2,175.94x = 3,003.26 × 1,389.85
  4. Step 4: Simplify right side
    2,175.94x = 4,174,080.91
  5. Step 5: Solve for x
    x = 4,174,080.91/2,175.94
  6. Step 6: Final answer
    x = 1,918.29

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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.