Home / 3,888.09-5,365.62-2,119.79

Finding the Fourth Proportional to 3,888.09, 5,365.62 and 2,119.79

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Solution

The fourth proportional to 3,888.09, 5,365.62 and 2,119.79 is: 2,925.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.09 : 5,365.62 = 2,119.79 : x
  2. Step 2: Convert to fraction form
    3,888.09/5,365.62 = 2,119.79/x
  3. Step 3: Cross multiply
    3,888.09x = 5,365.62 × 2,119.79
  4. Step 4: Simplify right side
    3,888.09x = 11,373,960.79
  5. Step 5: Solve for x
    x = 11,373,960.79/3,888.09
  6. Step 6: Final answer
    x = 2,925.33

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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.