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Finding the Fourth Proportional to 7,615, 11,422.50 and 2,998

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Solution

The fourth proportional to 7,615, 11,422.50 and 2,998 is: 4,497

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615 : 11,422.50 = 2,998 : x
  2. Step 2: Convert to fraction form
    7,615/11,422.50 = 2,998/x
  3. Step 3: Cross multiply
    7,615x = 11,422.50 × 2,998
  4. Step 4: Simplify right side
    7,615x = 34,244,655
  5. Step 5: Solve for x
    x = 34,244,655/7,615
  6. Step 6: Final answer
    x = 4,497

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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.