Home / 2,175.30-3,249.14-1,868.31

Finding the Fourth Proportional to 2,175.30, 3,249.14 and 1,868.31

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Solution

The fourth proportional to 2,175.30, 3,249.14 and 1,868.31 is: 2,790.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.30 : 3,249.14 = 1,868.31 : x
  2. Step 2: Convert to fraction form
    2,175.30/3,249.14 = 1,868.31/x
  3. Step 3: Cross multiply
    2,175.30x = 3,249.14 × 1,868.31
  4. Step 4: Simplify right side
    2,175.30x = 6,070,391.41
  5. Step 5: Solve for x
    x = 6,070,391.41/2,175.30
  6. Step 6: Final answer
    x = 2,790.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.