Home / 3,888.19-5,365.42-2,119.69

Finding the Fourth Proportional to 3,888.19, 5,365.42 and 2,119.69

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Solution

The fourth proportional to 3,888.19, 5,365.42 and 2,119.69 is: 2,925.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,888.19 : 5,365.42 = 2,119.69 : x
  2. Step 2: Convert to fraction form
    3,888.19/5,365.42 = 2,119.69/x
  3. Step 3: Cross multiply
    3,888.19x = 5,365.42 × 2,119.69
  4. Step 4: Simplify right side
    3,888.19x = 11,373,027.12
  5. Step 5: Solve for x
    x = 11,373,027.12/3,888.19
  6. Step 6: Final answer
    x = 2,925.02

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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.