Home / 2,230.74-3,078.61-1,236.21

Finding the Fourth Proportional to 2,230.74, 3,078.61 and 1,236.21

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Solution

The fourth proportional to 2,230.74, 3,078.61 and 1,236.21 is: 1,706.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,230.74 : 3,078.61 = 1,236.21 : x
  2. Step 2: Convert to fraction form
    2,230.74/3,078.61 = 1,236.21/x
  3. Step 3: Cross multiply
    2,230.74x = 3,078.61 × 1,236.21
  4. Step 4: Simplify right side
    2,230.74x = 3,805,811.15
  5. Step 5: Solve for x
    x = 3,805,811.15/2,230.74
  6. Step 6: Final answer
    x = 1,706.08

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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.