Home / 2,126.80-3,192.96-1,640.20

Finding the Fourth Proportional to 2,126.80, 3,192.96 and 1,640.20

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Solution

The fourth proportional to 2,126.80, 3,192.96 and 1,640.20 is: 2,462.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.80 : 3,192.96 = 1,640.20 : x
  2. Step 2: Convert to fraction form
    2,126.80/3,192.96 = 1,640.20/x
  3. Step 3: Cross multiply
    2,126.80x = 3,192.96 × 1,640.20
  4. Step 4: Simplify right side
    2,126.80x = 5,237,092.99
  5. Step 5: Solve for x
    x = 5,237,092.99/2,126.80
  6. Step 6: Final answer
    x = 2,462.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.