Home / 3,901.30-5,847.90-2,143.60

Finding the Fourth Proportional to 3,901.30, 5,847.90 and 2,143.60

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Solution

The fourth proportional to 3,901.30, 5,847.90 and 2,143.60 is: 3,213.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.30 : 5,847.90 = 2,143.60 : x
  2. Step 2: Convert to fraction form
    3,901.30/5,847.90 = 2,143.60/x
  3. Step 3: Cross multiply
    3,901.30x = 5,847.90 × 2,143.60
  4. Step 4: Simplify right side
    3,901.30x = 12,535,558.44
  5. Step 5: Solve for x
    x = 12,535,558.44/3,901.30
  6. Step 6: Final answer
    x = 3,213.17

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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.