Home / 7,620.35-11,425.32-2,689.34

Finding the Fourth Proportional to 7,620.35, 11,425.32 and 2,689.34

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Solution

The fourth proportional to 7,620.35, 11,425.32 and 2,689.34 is: 4,032.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.35 : 11,425.32 = 2,689.34 : x
  2. Step 2: Convert to fraction form
    7,620.35/11,425.32 = 2,689.34/x
  3. Step 3: Cross multiply
    7,620.35x = 11,425.32 × 2,689.34
  4. Step 4: Simplify right side
    7,620.35x = 30,726,512.96
  5. Step 5: Solve for x
    x = 30,726,512.96/7,620.35
  6. Step 6: Final answer
    x = 4,032.17

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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.