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Finding the Fourth Proportional to 7,805.45, 10,767.14 and 4,819.16

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Solution

The fourth proportional to 7,805.45, 10,767.14 and 4,819.16 is: 6,647.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.45 : 10,767.14 = 4,819.16 : x
  2. Step 2: Convert to fraction form
    7,805.45/10,767.14 = 4,819.16/x
  3. Step 3: Cross multiply
    7,805.45x = 10,767.14 × 4,819.16
  4. Step 4: Simplify right side
    7,805.45x = 51,888,591.30
  5. Step 5: Solve for x
    x = 51,888,591.30/7,805.45
  6. Step 6: Final answer
    x = 6,647.74

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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.