Home / 7,132.88-9,843.40-3,989.06

Finding the Fourth Proportional to 7,132.88, 9,843.40 and 3,989.06

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Solution

The fourth proportional to 7,132.88, 9,843.40 and 3,989.06 is: 5,504.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,132.88 : 9,843.40 = 3,989.06 : x
  2. Step 2: Convert to fraction form
    7,132.88/9,843.40 = 3,989.06/x
  3. Step 3: Cross multiply
    7,132.88x = 9,843.40 × 3,989.06
  4. Step 4: Simplify right side
    7,132.88x = 39,265,942.80
  5. Step 5: Solve for x
    x = 39,265,942.80/7,132.88
  6. Step 6: Final answer
    x = 5,504.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.