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Finding the Fourth Proportional to 6,603.56, 9,112.86 and 3,809

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Solution

The fourth proportional to 6,603.56, 9,112.86 and 3,809 is: 5,256.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.56 : 9,112.86 = 3,809 : x
  2. Step 2: Convert to fraction form
    6,603.56/9,112.86 = 3,809/x
  3. Step 3: Cross multiply
    6,603.56x = 9,112.86 × 3,809
  4. Step 4: Simplify right side
    6,603.56x = 34,710,883.74
  5. Step 5: Solve for x
    x = 34,710,883.74/6,603.56
  6. Step 6: Final answer
    x = 5,256.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.