Home / 7,851.12-11,767.14-3,687.72

Finding the Fourth Proportional to 7,851.12, 11,767.14 and 3,687.72

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Solution

The fourth proportional to 7,851.12, 11,767.14 and 3,687.72 is: 5,527.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.12 : 11,767.14 = 3,687.72 : x
  2. Step 2: Convert to fraction form
    7,851.12/11,767.14 = 3,687.72/x
  3. Step 3: Cross multiply
    7,851.12x = 11,767.14 × 3,687.72
  4. Step 4: Simplify right side
    7,851.12x = 43,393,917.52
  5. Step 5: Solve for x
    x = 43,393,917.52/7,851.12
  6. Step 6: Final answer
    x = 5,527.10

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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.