Home / 8,849.92-12,212.14-5,215.40

Finding the Fourth Proportional to 8,849.92, 12,212.14 and 5,215.40

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Solution

The fourth proportional to 8,849.92, 12,212.14 and 5,215.40 is: 7,196.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,849.92 : 12,212.14 = 5,215.40 : x
  2. Step 2: Convert to fraction form
    8,849.92/12,212.14 = 5,215.40/x
  3. Step 3: Cross multiply
    8,849.92x = 12,212.14 × 5,215.40
  4. Step 4: Simplify right side
    8,849.92x = 63,691,194.96
  5. Step 5: Solve for x
    x = 63,691,194.96/8,849.92
  6. Step 6: Final answer
    x = 7,196.81

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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.