Home / 4,762.80-7,138.68-2,816.64

Finding the Fourth Proportional to 4,762.80, 7,138.68 and 2,816.64

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Solution

The fourth proportional to 4,762.80, 7,138.68 and 2,816.64 is: 4,221.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,762.80 : 7,138.68 = 2,816.64 : x
  2. Step 2: Convert to fraction form
    4,762.80/7,138.68 = 2,816.64/x
  3. Step 3: Cross multiply
    4,762.80x = 7,138.68 × 2,816.64
  4. Step 4: Simplify right side
    4,762.80x = 20,107,091.64
  5. Step 5: Solve for x
    x = 20,107,091.64/4,762.80
  6. Step 6: Final answer
    x = 4,221.70

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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.