Home / 7,087.88-9,781.62-4,103.18

Finding the Fourth Proportional to 7,087.88, 9,781.62 and 4,103.18

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Solution

The fourth proportional to 7,087.88, 9,781.62 and 4,103.18 is: 5,662.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,087.88 : 9,781.62 = 4,103.18 : x
  2. Step 2: Convert to fraction form
    7,087.88/9,781.62 = 4,103.18/x
  3. Step 3: Cross multiply
    7,087.88x = 9,781.62 × 4,103.18
  4. Step 4: Simplify right side
    7,087.88x = 40,135,747.55
  5. Step 5: Solve for x
    x = 40,135,747.55/7,087.88
  6. Step 6: Final answer
    x = 5,662.59

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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.