Home / 5,285.25-7,890.82-4,731.21

Finding the Fourth Proportional to 5,285.25, 7,890.82 and 4,731.21

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Solution

The fourth proportional to 5,285.25, 7,890.82 and 4,731.21 is: 7,063.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.25 : 7,890.82 = 4,731.21 : x
  2. Step 2: Convert to fraction form
    5,285.25/7,890.82 = 4,731.21/x
  3. Step 3: Cross multiply
    5,285.25x = 7,890.82 × 4,731.21
  4. Step 4: Simplify right side
    5,285.25x = 37,333,114.66
  5. Step 5: Solve for x
    x = 37,333,114.66/5,285.25
  6. Step 6: Final answer
    x = 7,063.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.