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Finding the Fourth Proportional to 6,748.74, 9,313 and 3,915.97

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Solution

The fourth proportional to 6,748.74, 9,313 and 3,915.97 is: 5,403.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,748.74 : 9,313 = 3,915.97 : x
  2. Step 2: Convert to fraction form
    6,748.74/9,313 = 3,915.97/x
  3. Step 3: Cross multiply
    6,748.74x = 9,313 × 3,915.97
  4. Step 4: Simplify right side
    6,748.74x = 36,469,428.61
  5. Step 5: Solve for x
    x = 36,469,428.61/6,748.74
  6. Step 6: Final answer
    x = 5,403.89

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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.