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Finding the Fourth Proportional to 3,561.62, 4,915.11 and 2,069.42

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Solution

The fourth proportional to 3,561.62, 4,915.11 and 2,069.42 is: 2,855.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.62 : 4,915.11 = 2,069.42 : x
  2. Step 2: Convert to fraction form
    3,561.62/4,915.11 = 2,069.42/x
  3. Step 3: Cross multiply
    3,561.62x = 4,915.11 × 2,069.42
  4. Step 4: Simplify right side
    3,561.62x = 10,171,434.13
  5. Step 5: Solve for x
    x = 10,171,434.13/3,561.62
  6. Step 6: Final answer
    x = 2,855.84

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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.