Home / 7,824.89-11,731.17-3,877.50

Finding the Fourth Proportional to 7,824.89, 11,731.17 and 3,877.50

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Solution

The fourth proportional to 7,824.89, 11,731.17 and 3,877.50 is: 5,813.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,824.89 : 11,731.17 = 3,877.50 : x
  2. Step 2: Convert to fraction form
    7,824.89/11,731.17 = 3,877.50/x
  3. Step 3: Cross multiply
    7,824.89x = 11,731.17 × 3,877.50
  4. Step 4: Simplify right side
    7,824.89x = 45,487,611.68
  5. Step 5: Solve for x
    x = 45,487,611.68/7,824.89
  6. Step 6: Final answer
    x = 5,813.20

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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.