Home / 2,193.66-3,291.10-1,220.45

Finding the Fourth Proportional to 2,193.66, 3,291.10 and 1,220.45

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Solution

The fourth proportional to 2,193.66, 3,291.10 and 1,220.45 is: 1,831.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,193.66 : 3,291.10 = 1,220.45 : x
  2. Step 2: Convert to fraction form
    2,193.66/3,291.10 = 1,220.45/x
  3. Step 3: Cross multiply
    2,193.66x = 3,291.10 × 1,220.45
  4. Step 4: Simplify right side
    2,193.66x = 4,016,606.54
  5. Step 5: Solve for x
    x = 4,016,606.54/2,193.66
  6. Step 6: Final answer
    x = 1,831.01

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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.