Home / 3,938.08-5,434.48-2,169.64

Finding the Fourth Proportional to 3,938.08, 5,434.48 and 2,169.64

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Solution

The fourth proportional to 3,938.08, 5,434.48 and 2,169.64 is: 2,994.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.08 : 5,434.48 = 2,169.64 : x
  2. Step 2: Convert to fraction form
    3,938.08/5,434.48 = 2,169.64/x
  3. Step 3: Cross multiply
    3,938.08x = 5,434.48 × 2,169.64
  4. Step 4: Simplify right side
    3,938.08x = 11,790,865.19
  5. Step 5: Solve for x
    x = 11,790,865.19/3,938.08
  6. Step 6: Final answer
    x = 2,994.06

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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.