Home / 3,411.88-5,118.28-1,220.84

Finding the Fourth Proportional to 3,411.88, 5,118.28 and 1,220.84

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Solution

The fourth proportional to 3,411.88, 5,118.28 and 1,220.84 is: 1,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.88 : 5,118.28 = 1,220.84 : x
  2. Step 2: Convert to fraction form
    3,411.88/5,118.28 = 1,220.84/x
  3. Step 3: Cross multiply
    3,411.88x = 5,118.28 × 1,220.84
  4. Step 4: Simplify right side
    3,411.88x = 6,248,600.96
  5. Step 5: Solve for x
    x = 6,248,600.96/3,411.88
  6. Step 6: Final answer
    x = 1,831.42

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Double scale
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Similar ratio
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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.