Home / 7,831.67-10,808.21-5,174.42

Finding the Fourth Proportional to 7,831.67, 10,808.21 and 5,174.42

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Solution

The fourth proportional to 7,831.67, 10,808.21 and 5,174.42 is: 7,141.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.67 : 10,808.21 = 5,174.42 : x
  2. Step 2: Convert to fraction form
    7,831.67/10,808.21 = 5,174.42/x
  3. Step 3: Cross multiply
    7,831.67x = 10,808.21 × 5,174.42
  4. Step 4: Simplify right side
    7,831.67x = 55,926,217.99
  5. Step 5: Solve for x
    x = 55,926,217.99/7,831.67
  6. Step 6: Final answer
    x = 7,141.03

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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.