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Finding the Third Proportional to 5,477.47 and 7,842.45

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Solution

The third proportional to 5,477.47 and 7,842.45 is: 11,228.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,477.47 : 7,842.45 = 7,842.45 : x
  2. Step 2: Convert to fraction form
    5,477.47/7,842.45 = 7,842.45/x
  3. Step 3: Cross multiply
    5,477.47x = 7,842.45 × 7,842.45
  4. Step 4: Simplify right side
    5,477.47x = 61,503,948.48
  5. Step 5: Solve for x
    x = 61,503,948.48/5,477.47
  6. Step 6: Final answer
    x = 11,228.54

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.