Home / 3,887.47-5,364.69-2,119.09

Finding the Fourth Proportional to 3,887.47, 5,364.69 and 2,119.09

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Solution

The fourth proportional to 3,887.47, 5,364.69 and 2,119.09 is: 2,924.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.47 : 5,364.69 = 2,119.09 : x
  2. Step 2: Convert to fraction form
    3,887.47/5,364.69 = 2,119.09/x
  3. Step 3: Cross multiply
    3,887.47x = 5,364.69 × 2,119.09
  4. Step 4: Simplify right side
    3,887.47x = 11,368,260.93
  5. Step 5: Solve for x
    x = 11,368,260.93/3,887.47
  6. Step 6: Final answer
    x = 2,924.33

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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.