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Finding the Fourth Proportional to 10,004.50, 15,006.95 and 3,079

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Solution

The fourth proportional to 10,004.50, 15,006.95 and 3,079 is: 4,618.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,004.50 : 15,006.95 = 3,079 : x
  2. Step 2: Convert to fraction form
    10,004.50/15,006.95 = 3,079/x
  3. Step 3: Cross multiply
    10,004.50x = 15,006.95 × 3,079
  4. Step 4: Simplify right side
    10,004.50x = 46,206,399.05
  5. Step 5: Solve for x
    x = 46,206,399.05/10,004.50
  6. Step 6: Final answer
    x = 4,618.56

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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.