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Finding the Fourth Proportional to 4,689.92, 7,030.22 and 2,610.87

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Solution

The fourth proportional to 4,689.92, 7,030.22 and 2,610.87 is: 3,913.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.92 : 7,030.22 = 2,610.87 : x
  2. Step 2: Convert to fraction form
    4,689.92/7,030.22 = 2,610.87/x
  3. Step 3: Cross multiply
    4,689.92x = 7,030.22 × 2,610.87
  4. Step 4: Simplify right side
    4,689.92x = 18,354,977.44
  5. Step 5: Solve for x
    x = 18,354,977.44/4,689.92
  6. Step 6: Final answer
    x = 3,913.71

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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.