Home / 2,193.72-3,291.19-1,220.51

Finding the Fourth Proportional to 2,193.72, 3,291.19 and 1,220.51

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Solution

The fourth proportional to 2,193.72, 3,291.19 and 1,220.51 is: 1,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,193.72 : 3,291.19 = 1,220.51 : x
  2. Step 2: Convert to fraction form
    2,193.72/3,291.19 = 1,220.51/x
  3. Step 3: Cross multiply
    2,193.72x = 3,291.19 × 1,220.51
  4. Step 4: Simplify right side
    2,193.72x = 4,016,910.80
  5. Step 5: Solve for x
    x = 4,016,910.80/2,193.72
  6. Step 6: Final answer
    x = 1,831.10

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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.