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Finding the Fourth Proportional to 6,603.88, 9,893.40 and 5,135.89

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Solution

The fourth proportional to 6,603.88, 9,893.40 and 5,135.89 is: 7,694.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.88 : 9,893.40 = 5,135.89 : x
  2. Step 2: Convert to fraction form
    6,603.88/9,893.40 = 5,135.89/x
  3. Step 3: Cross multiply
    6,603.88x = 9,893.40 × 5,135.89
  4. Step 4: Simplify right side
    6,603.88x = 50,811,414.13
  5. Step 5: Solve for x
    x = 50,811,414.13/6,603.88
  6. Step 6: Final answer
    x = 7,694.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.