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Finding the Fourth Proportional to 5,443.84, 7,512.06 and 3,086.20

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Solution

The fourth proportional to 5,443.84, 7,512.06 and 3,086.20 is: 4,258.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,443.84 : 7,512.06 = 3,086.20 : x
  2. Step 2: Convert to fraction form
    5,443.84/7,512.06 = 3,086.20/x
  3. Step 3: Cross multiply
    5,443.84x = 7,512.06 × 3,086.20
  4. Step 4: Simplify right side
    5,443.84x = 23,183,719.57
  5. Step 5: Solve for x
    x = 23,183,719.57/5,443.84
  6. Step 6: Final answer
    x = 4,258.71

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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.