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Finding the Fourth Proportional to 7,915.97, 11,873.85 and 3,298.97

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Solution

The fourth proportional to 7,915.97, 11,873.85 and 3,298.97 is: 4,948.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.97 : 11,873.85 = 3,298.97 : x
  2. Step 2: Convert to fraction form
    7,915.97/11,873.85 = 3,298.97/x
  3. Step 3: Cross multiply
    7,915.97x = 11,873.85 × 3,298.97
  4. Step 4: Simplify right side
    7,915.97x = 39,171,415.57
  5. Step 5: Solve for x
    x = 39,171,415.57/7,915.97
  6. Step 6: Final answer
    x = 4,948.41

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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.