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Finding the Fourth Proportional to 2,566.98, 3,850.47 and 811.89

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Solution

The fourth proportional to 2,566.98, 3,850.47 and 811.89 is: 1,217.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,566.98 : 3,850.47 = 811.89 : x
  2. Step 2: Convert to fraction form
    2,566.98/3,850.47 = 811.89/x
  3. Step 3: Cross multiply
    2,566.98x = 3,850.47 × 811.89
  4. Step 4: Simplify right side
    2,566.98x = 3,126,158.09
  5. Step 5: Solve for x
    x = 3,126,158.09/2,566.98
  6. Step 6: Final answer
    x = 1,217.84

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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.