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Finding the Fourth Proportional to 5,007.69, 7,508.97 and 2,815.83

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Solution

The fourth proportional to 5,007.69, 7,508.97 and 2,815.83 is: 4,222.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,007.69 : 7,508.97 = 2,815.83 : x
  2. Step 2: Convert to fraction form
    5,007.69/7,508.97 = 2,815.83/x
  3. Step 3: Cross multiply
    5,007.69x = 7,508.97 × 2,815.83
  4. Step 4: Simplify right side
    5,007.69x = 21,143,983.00
  5. Step 5: Solve for x
    x = 21,143,983.00/5,007.69
  6. Step 6: Final answer
    x = 4,222.30

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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.