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Finding the Fourth Proportional to 8,364.75, 12,547.94 and 2,819.49

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Solution

The fourth proportional to 8,364.75, 12,547.94 and 2,819.49 is: 4,229.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.75 : 12,547.94 = 2,819.49 : x
  2. Step 2: Convert to fraction form
    8,364.75/12,547.94 = 2,819.49/x
  3. Step 3: Cross multiply
    8,364.75x = 12,547.94 × 2,819.49
  4. Step 4: Simplify right side
    8,364.75x = 35,378,777.25
  5. Step 5: Solve for x
    x = 35,378,777.25/8,364.75
  6. Step 6: Final answer
    x = 4,229.51

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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.