Home / 3,803.89-5,246.35-2,311.78

Finding the Fourth Proportional to 3,803.89, 5,246.35 and 2,311.78

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Solution

The fourth proportional to 3,803.89, 5,246.35 and 2,311.78 is: 3,188.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,803.89 : 5,246.35 = 2,311.78 : x
  2. Step 2: Convert to fraction form
    3,803.89/5,246.35 = 2,311.78/x
  3. Step 3: Cross multiply
    3,803.89x = 5,246.35 × 2,311.78
  4. Step 4: Simplify right side
    3,803.89x = 12,128,407.00
  5. Step 5: Solve for x
    x = 12,128,407.00/3,803.89
  6. Step 6: Final answer
    x = 3,188.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.