Home / 3,891.02-5,369.70-2,399.91

Finding the Fourth Proportional to 3,891.02, 5,369.70 and 2,399.91

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Solution

The fourth proportional to 3,891.02, 5,369.70 and 2,399.91 is: 3,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.02 : 5,369.70 = 2,399.91 : x
  2. Step 2: Convert to fraction form
    3,891.02/5,369.70 = 2,399.91/x
  3. Step 3: Cross multiply
    3,891.02x = 5,369.70 × 2,399.91
  4. Step 4: Simplify right side
    3,891.02x = 12,886,796.73
  5. Step 5: Solve for x
    x = 12,886,796.73/3,891.02
  6. Step 6: Final answer
    x = 3,311.94

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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.