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Finding the Fourth Proportional to 6,603.75, 9,113.72 and 3,771.99

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Solution

The fourth proportional to 6,603.75, 9,113.72 and 3,771.99 is: 5,205.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.75 : 9,113.72 = 3,771.99 : x
  2. Step 2: Convert to fraction form
    6,603.75/9,113.72 = 3,771.99/x
  3. Step 3: Cross multiply
    6,603.75x = 9,113.72 × 3,771.99
  4. Step 4: Simplify right side
    6,603.75x = 34,376,841.84
  5. Step 5: Solve for x
    x = 34,376,841.84/6,603.75
  6. Step 6: Final answer
    x = 5,205.65

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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.