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Finding the Fourth Proportional to 4,815.72, 7,223.60 and 1,528.80

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Solution

The fourth proportional to 4,815.72, 7,223.60 and 1,528.80 is: 2,293.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.72 : 7,223.60 = 1,528.80 : x
  2. Step 2: Convert to fraction form
    4,815.72/7,223.60 = 1,528.80/x
  3. Step 3: Cross multiply
    4,815.72x = 7,223.60 × 1,528.80
  4. Step 4: Simplify right side
    4,815.72x = 11,043,439.68
  5. Step 5: Solve for x
    x = 11,043,439.68/4,815.72
  6. Step 6: Final answer
    x = 2,293.21

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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.