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Finding the Fourth Proportional to 2,569.98, 3,854.97 and 814.89

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Solution

The fourth proportional to 2,569.98, 3,854.97 and 814.89 is: 1,222.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,569.98 : 3,854.97 = 814.89 : x
  2. Step 2: Convert to fraction form
    2,569.98/3,854.97 = 814.89/x
  3. Step 3: Cross multiply
    2,569.98x = 3,854.97 × 814.89
  4. Step 4: Simplify right side
    2,569.98x = 3,141,376.50
  5. Step 5: Solve for x
    x = 3,141,376.50/2,569.98
  6. Step 6: Final answer
    x = 1,222.34

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Similar ratio
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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.