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Finding the Fourth Proportional to 3,604.79, 4,974.96 and 2,188.15

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Solution

The fourth proportional to 3,604.79, 4,974.96 and 2,188.15 is: 3,019.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,604.79 : 4,974.96 = 2,188.15 : x
  2. Step 2: Convert to fraction form
    3,604.79/4,974.96 = 2,188.15/x
  3. Step 3: Cross multiply
    3,604.79x = 4,974.96 × 2,188.15
  4. Step 4: Simplify right side
    3,604.79x = 10,885,982.85
  5. Step 5: Solve for x
    x = 10,885,982.85/3,604.79
  6. Step 6: Final answer
    x = 3,019.86

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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.