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Finding the Fourth Proportional to 8,819.92, 13,238.52 and 4,206.16

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Solution

The fourth proportional to 8,819.92, 13,238.52 and 4,206.16 is: 6,313.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,819.92 : 13,238.52 = 4,206.16 : x
  2. Step 2: Convert to fraction form
    8,819.92/13,238.52 = 4,206.16/x
  3. Step 3: Cross multiply
    8,819.92x = 13,238.52 × 4,206.16
  4. Step 4: Simplify right side
    8,819.92x = 55,683,333.28
  5. Step 5: Solve for x
    x = 55,683,333.28/8,819.92
  6. Step 6: Final answer
    x = 6,313.36

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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.