Home / 3,412.20-5,117.58-1,221.06

Finding the Fourth Proportional to 3,412.20, 5,117.58 and 1,221.06

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Solution

The fourth proportional to 3,412.20, 5,117.58 and 1,221.06 is: 1,831.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.20 : 5,117.58 = 1,221.06 : x
  2. Step 2: Convert to fraction form
    3,412.20/5,117.58 = 1,221.06/x
  3. Step 3: Cross multiply
    3,412.20x = 5,117.58 × 1,221.06
  4. Step 4: Simplify right side
    3,412.20x = 6,248,872.23
  5. Step 5: Solve for x
    x = 6,248,872.23/3,412.20
  6. Step 6: Final answer
    x = 1,831.33

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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.