Home / 5,472.78-8,215.32-2,188.17

Finding the Fourth Proportional to 5,472.78, 8,215.32 and 2,188.17

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Solution

The fourth proportional to 5,472.78, 8,215.32 and 2,188.17 is: 3,284.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,472.78 : 8,215.32 = 2,188.17 : x
  2. Step 2: Convert to fraction form
    5,472.78/8,215.32 = 2,188.17/x
  3. Step 3: Cross multiply
    5,472.78x = 8,215.32 × 2,188.17
  4. Step 4: Simplify right side
    5,472.78x = 17,976,516.76
  5. Step 5: Solve for x
    x = 17,976,516.76/5,472.78
  6. Step 6: Final answer
    x = 3,284.71

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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.