Home / 5,419.74-7,480.78-3,181.70

Finding the Fourth Proportional to 5,419.74, 7,480.78 and 3,181.70

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Solution

The fourth proportional to 5,419.74, 7,480.78 and 3,181.70 is: 4,391.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.74 : 7,480.78 = 3,181.70 : x
  2. Step 2: Convert to fraction form
    5,419.74/7,480.78 = 3,181.70/x
  3. Step 3: Cross multiply
    5,419.74x = 7,480.78 × 3,181.70
  4. Step 4: Simplify right side
    5,419.74x = 23,801,597.73
  5. Step 5: Solve for x
    x = 23,801,597.73/5,419.74
  6. Step 6: Final answer
    x = 4,391.65

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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.