Home / 3,938.77-5,435.52-2,170.33

Finding the Fourth Proportional to 3,938.77, 5,435.52 and 2,170.33

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Solution

The fourth proportional to 3,938.77, 5,435.52 and 2,170.33 is: 2,995.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.77 : 5,435.52 = 2,170.33 : x
  2. Step 2: Convert to fraction form
    3,938.77/5,435.52 = 2,170.33/x
  3. Step 3: Cross multiply
    3,938.77x = 5,435.52 × 2,170.33
  4. Step 4: Simplify right side
    3,938.77x = 11,796,880.97
  5. Step 5: Solve for x
    x = 11,796,880.97/3,938.77
  6. Step 6: Final answer
    x = 2,995.07

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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.