Home / 2,190.19-3,022.20-1,246.10

Finding the Fourth Proportional to 2,190.19, 3,022.20 and 1,246.10

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Solution

The fourth proportional to 2,190.19, 3,022.20 and 1,246.10 is: 1,719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.19 : 3,022.20 = 1,246.10 : x
  2. Step 2: Convert to fraction form
    2,190.19/3,022.20 = 1,246.10/x
  3. Step 3: Cross multiply
    2,190.19x = 3,022.20 × 1,246.10
  4. Step 4: Simplify right side
    2,190.19x = 3,765,957.19
  5. Step 5: Solve for x
    x = 3,765,957.19/2,190.19
  6. Step 6: Final answer
    x = 1,719.47

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Double 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.