Home / 7,818.78-11,731.41-2,625.06

Finding the Fourth Proportional to 7,818.78, 11,731.41 and 2,625.06

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Solution

The fourth proportional to 7,818.78, 11,731.41 and 2,625.06 is: 3,938.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.78 : 11,731.41 = 2,625.06 : x
  2. Step 2: Convert to fraction form
    7,818.78/11,731.41 = 2,625.06/x
  3. Step 3: Cross multiply
    7,818.78x = 11,731.41 × 2,625.06
  4. Step 4: Simplify right side
    7,818.78x = 30,795,655.13
  5. Step 5: Solve for x
    x = 30,795,655.13/7,818.78
  6. Step 6: Final answer
    x = 3,938.68

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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.