Home / 3,887.79-5,365.17-2,119.35

Finding the Fourth Proportional to 3,887.79, 5,365.17 and 2,119.35

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Solution

The fourth proportional to 3,887.79, 5,365.17 and 2,119.35 is: 2,924.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.79 : 5,365.17 = 2,119.35 : x
  2. Step 2: Convert to fraction form
    3,887.79/5,365.17 = 2,119.35/x
  3. Step 3: Cross multiply
    3,887.79x = 5,365.17 × 2,119.35
  4. Step 4: Simplify right side
    3,887.79x = 11,370,673.04
  5. Step 5: Solve for x
    x = 11,370,673.04/3,887.79
  6. Step 6: Final answer
    x = 2,924.71

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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.