Home / 3,939.82-5,437.02-2,261.50

Finding the Fourth Proportional to 3,939.82, 5,437.02 and 2,261.50

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Solution

The fourth proportional to 3,939.82, 5,437.02 and 2,261.50 is: 3,120.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.82 : 5,437.02 = 2,261.50 : x
  2. Step 2: Convert to fraction form
    3,939.82/5,437.02 = 2,261.50/x
  3. Step 3: Cross multiply
    3,939.82x = 5,437.02 × 2,261.50
  4. Step 4: Simplify right side
    3,939.82x = 12,295,820.73
  5. Step 5: Solve for x
    x = 12,295,820.73/3,939.82
  6. Step 6: Final answer
    x = 3,120.91

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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.