Home / 7,731.78-11,598.09-2,185.56

Finding the Fourth Proportional to 7,731.78, 11,598.09 and 2,185.56

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Solution

The fourth proportional to 7,731.78, 11,598.09 and 2,185.56 is: 3,278.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,731.78 : 11,598.09 = 2,185.56 : x
  2. Step 2: Convert to fraction form
    7,731.78/11,598.09 = 2,185.56/x
  3. Step 3: Cross multiply
    7,731.78x = 11,598.09 × 2,185.56
  4. Step 4: Simplify right side
    7,731.78x = 25,348,321.58
  5. Step 5: Solve for x
    x = 25,348,321.58/7,731.78
  6. Step 6: Final answer
    x = 3,278.46

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1.5x scale

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.