Home / 3,426.13-5,129.61-2,190.43

Finding the Fourth Proportional to 3,426.13, 5,129.61 and 2,190.43

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Solution

The fourth proportional to 3,426.13, 5,129.61 and 2,190.43 is: 3,279.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,426.13 : 5,129.61 = 2,190.43 : x
  2. Step 2: Convert to fraction form
    3,426.13/5,129.61 = 2,190.43/x
  3. Step 3: Cross multiply
    3,426.13x = 5,129.61 × 2,190.43
  4. Step 4: Simplify right side
    3,426.13x = 11,236,051.63
  5. Step 5: Solve for x
    x = 11,236,051.63/3,426.13
  6. Step 6: Final answer
    x = 3,279.52

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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.