Home / 7,659.31-11,490.78-2,729.38

Finding the Fourth Proportional to 7,659.31, 11,490.78 and 2,729.38

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Solution

The fourth proportional to 7,659.31, 11,490.78 and 2,729.38 is: 4,094.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.31 : 11,490.78 = 2,729.38 : x
  2. Step 2: Convert to fraction form
    7,659.31/11,490.78 = 2,729.38/x
  3. Step 3: Cross multiply
    7,659.31x = 11,490.78 × 2,729.38
  4. Step 4: Simplify right side
    7,659.31x = 31,362,705.12
  5. Step 5: Solve for x
    x = 31,362,705.12/7,659.31
  6. Step 6: Final answer
    x = 4,094.72

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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.