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Finding the Fourth Proportional to 4,890.76, 6,749.11 and 2,794.88

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Solution

The fourth proportional to 4,890.76, 6,749.11 and 2,794.88 is: 3,856.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.76 : 6,749.11 = 2,794.88 : x
  2. Step 2: Convert to fraction form
    4,890.76/6,749.11 = 2,794.88/x
  3. Step 3: Cross multiply
    4,890.76x = 6,749.11 × 2,794.88
  4. Step 4: Simplify right side
    4,890.76x = 18,862,952.56
  5. Step 5: Solve for x
    x = 18,862,952.56/4,890.76
  6. Step 6: Final answer
    x = 3,856.86

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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.