Home / 3,261.40-4,902.90-2,786.20

Finding the Fourth Proportional to 3,261.40, 4,902.90 and 2,786.20

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Solution

The fourth proportional to 3,261.40, 4,902.90 and 2,786.20 is: 4,188.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.40 : 4,902.90 = 2,786.20 : x
  2. Step 2: Convert to fraction form
    3,261.40/4,902.90 = 2,786.20/x
  3. Step 3: Cross multiply
    3,261.40x = 4,902.90 × 2,786.20
  4. Step 4: Simplify right side
    3,261.40x = 13,660,459.98
  5. Step 5: Solve for x
    x = 13,660,459.98/3,261.40
  6. Step 6: Final answer
    x = 4,188.53

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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.