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Finding the Fourth Proportional to 3,551.87, 4,912.16 and 3,108.93

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Solution

The fourth proportional to 3,551.87, 4,912.16 and 3,108.93 is: 4,299.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,551.87 : 4,912.16 = 3,108.93 : x
  2. Step 2: Convert to fraction form
    3,551.87/4,912.16 = 3,108.93/x
  3. Step 3: Cross multiply
    3,551.87x = 4,912.16 × 3,108.93
  4. Step 4: Simplify right side
    3,551.87x = 15,271,546.04
  5. Step 5: Solve for x
    x = 15,271,546.04/3,551.87
  6. Step 6: Final answer
    x = 4,299.59

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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.