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Finding the Fourth Proportional to 6,603.86, 9,113.12 and 3,949.90

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Solution

The fourth proportional to 6,603.86, 9,113.12 and 3,949.90 is: 5,450.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.86 : 9,113.12 = 3,949.90 : x
  2. Step 2: Convert to fraction form
    6,603.86/9,113.12 = 3,949.90/x
  3. Step 3: Cross multiply
    6,603.86x = 9,113.12 × 3,949.90
  4. Step 4: Simplify right side
    6,603.86x = 35,995,912.69
  5. Step 5: Solve for x
    x = 35,995,912.69/6,603.86
  6. Step 6: Final answer
    x = 5,450.74

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1.5x scale

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.