Home / 7,851.84-11,777.82-2,661.36

Finding the Fourth Proportional to 7,851.84, 11,777.82 and 2,661.36

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Solution

The fourth proportional to 7,851.84, 11,777.82 and 2,661.36 is: 3,992.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.84 : 11,777.82 = 2,661.36 : x
  2. Step 2: Convert to fraction form
    7,851.84/11,777.82 = 2,661.36/x
  3. Step 3: Cross multiply
    7,851.84x = 11,777.82 × 2,661.36
  4. Step 4: Simplify right side
    7,851.84x = 31,345,019.04
  5. Step 5: Solve for x
    x = 31,345,019.04/7,851.84
  6. Step 6: Final answer
    x = 3,992.06

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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.