Home / 2,190.60-3,022.95-1,195.90

Finding the Fourth Proportional to 2,190.60, 3,022.95 and 1,195.90

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Solution

The fourth proportional to 2,190.60, 3,022.95 and 1,195.90 is: 1,650.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.60 : 3,022.95 = 1,195.90 : x
  2. Step 2: Convert to fraction form
    2,190.60/3,022.95 = 1,195.90/x
  3. Step 3: Cross multiply
    2,190.60x = 3,022.95 × 1,195.90
  4. Step 4: Simplify right side
    2,190.60x = 3,615,145.91
  5. Step 5: Solve for x
    x = 3,615,145.91/2,190.60
  6. Step 6: Final answer
    x = 1,650.30

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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.