Home / 3,768.90-5,205.15-2,939.46

Finding the Fourth Proportional to 3,768.90, 5,205.15 and 2,939.46

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Solution

The fourth proportional to 3,768.90, 5,205.15 and 2,939.46 is: 4,059.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,768.90 : 5,205.15 = 2,939.46 : x
  2. Step 2: Convert to fraction form
    3,768.90/5,205.15 = 2,939.46/x
  3. Step 3: Cross multiply
    3,768.90x = 5,205.15 × 2,939.46
  4. Step 4: Simplify right side
    3,768.90x = 15,300,330.22
  5. Step 5: Solve for x
    x = 15,300,330.22/3,768.90
  6. Step 6: Final answer
    x = 4,059.63

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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.