Home / 7,479.54-11,221.14-3,781.68

Finding the Fourth Proportional to 7,479.54, 11,221.14 and 3,781.68

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Solution

The fourth proportional to 7,479.54, 11,221.14 and 3,781.68 is: 5,673.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.54 : 11,221.14 = 3,781.68 : x
  2. Step 2: Convert to fraction form
    7,479.54/11,221.14 = 3,781.68/x
  3. Step 3: Cross multiply
    7,479.54x = 11,221.14 × 3,781.68
  4. Step 4: Simplify right side
    7,479.54x = 42,434,760.72
  5. Step 5: Solve for x
    x = 42,434,760.72/7,479.54
  6. Step 6: Final answer
    x = 5,673.45

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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.