Home / 3,840.32-5,299.65-2,161.75

Finding the Fourth Proportional to 3,840.32, 5,299.65 and 2,161.75

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Solution

The fourth proportional to 3,840.32, 5,299.65 and 2,161.75 is: 2,983.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.32 : 5,299.65 = 2,161.75 : x
  2. Step 2: Convert to fraction form
    3,840.32/5,299.65 = 2,161.75/x
  3. Step 3: Cross multiply
    3,840.32x = 5,299.65 × 2,161.75
  4. Step 4: Simplify right side
    3,840.32x = 11,456,512.04
  5. Step 5: Solve for x
    x = 11,456,512.04/3,840.32
  6. Step 6: Final answer
    x = 2,983.22

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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.