Home / 6,920.20-10,381.88-3,025.72

Finding the Fourth Proportional to 6,920.20, 10,381.88 and 3,025.72

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Solution

The fourth proportional to 6,920.20, 10,381.88 and 3,025.72 is: 4,539.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920.20 : 10,381.88 = 3,025.72 : x
  2. Step 2: Convert to fraction form
    6,920.20/10,381.88 = 3,025.72/x
  3. Step 3: Cross multiply
    6,920.20x = 10,381.88 × 3,025.72
  4. Step 4: Simplify right side
    6,920.20x = 31,412,661.95
  5. Step 5: Solve for x
    x = 31,412,661.95/6,920.20
  6. Step 6: Final answer
    x = 4,539.27

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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.