Home / 2,190.20-3,021.21-1,350.74

Finding the Fourth Proportional to 2,190.20, 3,021.21 and 1,350.74

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Solution

The fourth proportional to 2,190.20, 3,021.21 and 1,350.74 is: 1,863.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.20 : 3,021.21 = 1,350.74 : x
  2. Step 2: Convert to fraction form
    2,190.20/3,021.21 = 1,350.74/x
  3. Step 3: Cross multiply
    2,190.20x = 3,021.21 × 1,350.74
  4. Step 4: Simplify right side
    2,190.20x = 4,080,854.09
  5. Step 5: Solve for x
    x = 4,080,854.09/2,190.20
  6. Step 6: Final answer
    x = 1,863.24

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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.