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Finding the Fourth Proportional to 4,809.06, 6,636.18 and 2,819.28

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Solution

The fourth proportional to 4,809.06, 6,636.18 and 2,819.28 is: 3,890.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,809.06 : 6,636.18 = 2,819.28 : x
  2. Step 2: Convert to fraction form
    4,809.06/6,636.18 = 2,819.28/x
  3. Step 3: Cross multiply
    4,809.06x = 6,636.18 × 2,819.28
  4. Step 4: Simplify right side
    4,809.06x = 18,709,249.55
  5. Step 5: Solve for x
    x = 18,709,249.55/4,809.06
  6. Step 6: Final answer
    x = 3,890.42

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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.