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Finding the Fourth Proportional to 3,914.76, 5,865.30 and 3,260.84

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Solution

The fourth proportional to 3,914.76, 5,865.30 and 3,260.84 is: 4,885.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.76 : 5,865.30 = 3,260.84 : x
  2. Step 2: Convert to fraction form
    3,914.76/5,865.30 = 3,260.84/x
  3. Step 3: Cross multiply
    3,914.76x = 5,865.30 × 3,260.84
  4. Step 4: Simplify right side
    3,914.76x = 19,125,775.53
  5. Step 5: Solve for x
    x = 19,125,775.53/3,914.76
  6. Step 6: Final answer
    x = 4,885.55

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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.