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Finding the Fourth Proportional to 3,515, 4,847.40 and 2,255.09

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Solution

The fourth proportional to 3,515, 4,847.40 and 2,255.09 is: 3,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515 : 4,847.40 = 2,255.09 : x
  2. Step 2: Convert to fraction form
    3,515/4,847.40 = 2,255.09/x
  3. Step 3: Cross multiply
    3,515x = 4,847.40 × 2,255.09
  4. Step 4: Simplify right side
    3,515x = 10,931,299.03
  5. Step 5: Solve for x
    x = 10,931,299.03/3,515
  6. Step 6: Final answer
    x = 3,109.90

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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.