Home / 7,620.70-11,432.32-2,622.88

Finding the Fourth Proportional to 7,620.70, 11,432.32 and 2,622.88

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Solution

The fourth proportional to 7,620.70, 11,432.32 and 2,622.88 is: 3,934.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.70 : 11,432.32 = 2,622.88 : x
  2. Step 2: Convert to fraction form
    7,620.70/11,432.32 = 2,622.88/x
  3. Step 3: Cross multiply
    7,620.70x = 11,432.32 × 2,622.88
  4. Step 4: Simplify right side
    7,620.70x = 29,985,603.48
  5. Step 5: Solve for x
    x = 29,985,603.48/7,620.70
  6. Step 6: Final answer
    x = 3,934.76

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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.