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Finding the Fourth Proportional to 4,786.88, 6,605.90 and 2,798.53

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Solution

The fourth proportional to 4,786.88, 6,605.90 and 2,798.53 is: 3,861.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.88 : 6,605.90 = 2,798.53 : x
  2. Step 2: Convert to fraction form
    4,786.88/6,605.90 = 2,798.53/x
  3. Step 3: Cross multiply
    4,786.88x = 6,605.90 × 2,798.53
  4. Step 4: Simplify right side
    4,786.88x = 18,486,789.31
  5. Step 5: Solve for x
    x = 18,486,789.31/4,786.88
  6. Step 6: Final answer
    x = 3,861.97

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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.