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Finding the Fourth Proportional to 3,046.70, 4,570.22 and 855.61

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Solution

The fourth proportional to 3,046.70, 4,570.22 and 855.61 is: 1,283.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,046.70 : 4,570.22 = 855.61 : x
  2. Step 2: Convert to fraction form
    3,046.70/4,570.22 = 855.61/x
  3. Step 3: Cross multiply
    3,046.70x = 4,570.22 × 855.61
  4. Step 4: Simplify right side
    3,046.70x = 3,910,316.65
  5. Step 5: Solve for x
    x = 3,910,316.65/3,046.70
  6. Step 6: Final answer
    x = 1,283.46

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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.