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Finding the Fourth Proportional to 4,800.60, 7,200.90 and 3,245.40

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Solution

The fourth proportional to 4,800.60, 7,200.90 and 3,245.40 is: 4,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,800.60 : 7,200.90 = 3,245.40 : x
  2. Step 2: Convert to fraction form
    4,800.60/7,200.90 = 3,245.40/x
  3. Step 3: Cross multiply
    4,800.60x = 7,200.90 × 3,245.40
  4. Step 4: Simplify right side
    4,800.60x = 23,369,800.86
  5. Step 5: Solve for x
    x = 23,369,800.86/4,800.60
  6. Step 6: Final answer
    x = 4,868.10

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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.