Home / 2,302.80-3,174.21-2,112.12

Finding the Fourth Proportional to 2,302.80, 3,174.21 and 2,112.12

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Solution

The fourth proportional to 2,302.80, 3,174.21 and 2,112.12 is: 2,911.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,302.80 : 3,174.21 = 2,112.12 : x
  2. Step 2: Convert to fraction form
    2,302.80/3,174.21 = 2,112.12/x
  3. Step 3: Cross multiply
    2,302.80x = 3,174.21 × 2,112.12
  4. Step 4: Simplify right side
    2,302.80x = 6,704,312.43
  5. Step 5: Solve for x
    x = 6,704,312.43/2,302.80
  6. Step 6: Final answer
    x = 2,911.37

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Half scale
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1.5x scale

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.