Home / 3,939.98-5,439.02-2,448.90

Finding the Fourth Proportional to 3,939.98, 5,439.02 and 2,448.90

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Solution

The fourth proportional to 3,939.98, 5,439.02 and 2,448.90 is: 3,380.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.98 : 5,439.02 = 2,448.90 : x
  2. Step 2: Convert to fraction form
    3,939.98/5,439.02 = 2,448.90/x
  3. Step 3: Cross multiply
    3,939.98x = 5,439.02 × 2,448.90
  4. Step 4: Simplify right side
    3,939.98x = 13,319,603.83
  5. Step 5: Solve for x
    x = 13,319,603.83/3,939.98
  6. Step 6: Final answer
    x = 3,380.63

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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.