Home / 3,005.39-4,145.74-2,119.66

Finding the Fourth Proportional to 3,005.39, 4,145.74 and 2,119.66

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Solution

The fourth proportional to 3,005.39, 4,145.74 and 2,119.66 is: 2,923.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.39 : 4,145.74 = 2,119.66 : x
  2. Step 2: Convert to fraction form
    3,005.39/4,145.74 = 2,119.66/x
  3. Step 3: Cross multiply
    3,005.39x = 4,145.74 × 2,119.66
  4. Step 4: Simplify right side
    3,005.39x = 8,787,559.25
  5. Step 5: Solve for x
    x = 8,787,559.25/3,005.39
  6. Step 6: Final answer
    x = 2,923.93

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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.