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Finding the Third Proportional to 1,569.88 and 3,420.69

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Solution

The third proportional to 1,569.88 and 3,420.69 is: 7,453.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.88 : 3,420.69 = 3,420.69 : x
  2. Step 2: Convert to fraction form
    1,569.88/3,420.69 = 3,420.69/x
  3. Step 3: Cross multiply
    1,569.88x = 3,420.69 × 3,420.69
  4. Step 4: Simplify right side
    1,569.88x = 11,701,102.97
  5. Step 5: Solve for x
    x = 11,701,102.97/1,569.88
  6. Step 6: Final answer
    x = 7,453.53

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.