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Finding the Fourth Proportional to 4,800.78, 7,202.58 and 3,485.85

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Solution

The fourth proportional to 4,800.78, 7,202.58 and 3,485.85 is: 5,229.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,800.78 : 7,202.58 = 3,485.85 : x
  2. Step 2: Convert to fraction form
    4,800.78/7,202.58 = 3,485.85/x
  3. Step 3: Cross multiply
    4,800.78x = 7,202.58 × 3,485.85
  4. Step 4: Simplify right side
    4,800.78x = 25,107,113.49
  5. Step 5: Solve for x
    x = 25,107,113.49/4,800.78
  6. Step 6: Final answer
    x = 5,229.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.