Home / 3,019.71-4,161.18-2,178.93

Finding the Fourth Proportional to 3,019.71, 4,161.18 and 2,178.93

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Solution

The fourth proportional to 3,019.71, 4,161.18 and 2,178.93 is: 3,002.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,019.71 : 4,161.18 = 2,178.93 : x
  2. Step 2: Convert to fraction form
    3,019.71/4,161.18 = 2,178.93/x
  3. Step 3: Cross multiply
    3,019.71x = 4,161.18 × 2,178.93
  4. Step 4: Simplify right side
    3,019.71x = 9,066,919.94
  5. Step 5: Solve for x
    x = 9,066,919.94/3,019.71
  6. Step 6: Final answer
    x = 3,002.58

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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.