Home / 7,982.15-11,969.21-4,651.47

Finding the Fourth Proportional to 7,982.15, 11,969.21 and 4,651.47

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Solution

The fourth proportional to 7,982.15, 11,969.21 and 4,651.47 is: 6,974.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.15 : 11,969.21 = 4,651.47 : x
  2. Step 2: Convert to fraction form
    7,982.15/11,969.21 = 4,651.47/x
  3. Step 3: Cross multiply
    7,982.15x = 11,969.21 × 4,651.47
  4. Step 4: Simplify right side
    7,982.15x = 55,674,432.87
  5. Step 5: Solve for x
    x = 55,674,432.87/7,982.15
  6. Step 6: Final answer
    x = 6,974.87

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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.