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Finding the Fourth Proportional to 4,800.64, 7,195.20 and 1,720.96

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Solution

The fourth proportional to 4,800.64, 7,195.20 and 1,720.96 is: 2,579.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,800.64 : 7,195.20 = 1,720.96 : x
  2. Step 2: Convert to fraction form
    4,800.64/7,195.20 = 1,720.96/x
  3. Step 3: Cross multiply
    4,800.64x = 7,195.20 × 1,720.96
  4. Step 4: Simplify right side
    4,800.64x = 12,382,651.39
  5. Step 5: Solve for x
    x = 12,382,651.39/4,800.64
  6. Step 6: Final answer
    x = 2,579.38

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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.