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Finding the Fourth Proportional to 3,291.92, 4,944.12 and 2,915.60

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Solution

The fourth proportional to 3,291.92, 4,944.12 and 2,915.60 is: 4,378.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.92 : 4,944.12 = 2,915.60 : x
  2. Step 2: Convert to fraction form
    3,291.92/4,944.12 = 2,915.60/x
  3. Step 3: Cross multiply
    3,291.92x = 4,944.12 × 2,915.60
  4. Step 4: Simplify right side
    3,291.92x = 14,415,076.27
  5. Step 5: Solve for x
    x = 14,415,076.27/3,291.92
  6. Step 6: Final answer
    x = 4,378.93

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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.