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Finding the Third Proportional to 4,721.25 and 7,285.50

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Solution

The third proportional to 4,721.25 and 7,285.50 is: 11,242.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.25 : 7,285.50 = 7,285.50 : x
  2. Step 2: Convert to fraction form
    4,721.25/7,285.50 = 7,285.50/x
  3. Step 3: Cross multiply
    4,721.25x = 7,285.50 × 7,285.50
  4. Step 4: Simplify right side
    4,721.25x = 53,078,510.25
  5. Step 5: Solve for x
    x = 53,078,510.25/4,721.25
  6. Step 6: Final answer
    x = 11,242.47

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.