Home / 7,231.42-9,979.08-4,087.67

Finding the Fourth Proportional to 7,231.42, 9,979.08 and 4,087.67

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Solution

The fourth proportional to 7,231.42, 9,979.08 and 4,087.67 is: 5,640.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,231.42 : 9,979.08 = 4,087.67 : x
  2. Step 2: Convert to fraction form
    7,231.42/9,979.08 = 4,087.67/x
  3. Step 3: Cross multiply
    7,231.42x = 9,979.08 × 4,087.67
  4. Step 4: Simplify right side
    7,231.42x = 40,791,185.94
  5. Step 5: Solve for x
    x = 40,791,185.94/7,231.42
  6. Step 6: Final answer
    x = 5,640.83

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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.