Home / 3,938.07-5,434.47-2,169.66

Finding the Fourth Proportional to 3,938.07, 5,434.47 and 2,169.66

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Solution

The fourth proportional to 3,938.07, 5,434.47 and 2,169.66 is: 2,994.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.07 : 5,434.47 = 2,169.66 : x
  2. Step 2: Convert to fraction form
    3,938.07/5,434.47 = 2,169.66/x
  3. Step 3: Cross multiply
    3,938.07x = 5,434.47 × 2,169.66
  4. Step 4: Simplify right side
    3,938.07x = 11,790,952.18
  5. Step 5: Solve for x
    x = 11,790,952.18/3,938.07
  6. Step 6: Final answer
    x = 2,994.09

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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.