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Finding the Fourth Proportional to 2,516.69, 3,775.80 and 785.33

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Solution

The fourth proportional to 2,516.69, 3,775.80 and 785.33 is: 1,178.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,516.69 : 3,775.80 = 785.33 : x
  2. Step 2: Convert to fraction form
    2,516.69/3,775.80 = 785.33/x
  3. Step 3: Cross multiply
    2,516.69x = 3,775.80 × 785.33
  4. Step 4: Simplify right side
    2,516.69x = 2,965,249.01
  5. Step 5: Solve for x
    x = 2,965,249.01/2,516.69
  6. Step 6: Final answer
    x = 1,178.23

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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.