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Finding the Fourth Proportional to 4,880.60, 7,320.90 and 4,520.60

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Solution

The fourth proportional to 4,880.60, 7,320.90 and 4,520.60 is: 6,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.60 : 7,320.90 = 4,520.60 : x
  2. Step 2: Convert to fraction form
    4,880.60/7,320.90 = 4,520.60/x
  3. Step 3: Cross multiply
    4,880.60x = 7,320.90 × 4,520.60
  4. Step 4: Simplify right side
    4,880.60x = 33,094,860.54
  5. Step 5: Solve for x
    x = 33,094,860.54/4,880.60
  6. Step 6: Final answer
    x = 6,780.90

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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.