Home / 2,119.29-3,178.55-886.37

Finding the Fourth Proportional to 2,119.29, 3,178.55 and 886.37

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Solution

The fourth proportional to 2,119.29, 3,178.55 and 886.37 is: 1,329.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.29 : 3,178.55 = 886.37 : x
  2. Step 2: Convert to fraction form
    2,119.29/3,178.55 = 886.37/x
  3. Step 3: Cross multiply
    2,119.29x = 3,178.55 × 886.37
  4. Step 4: Simplify right side
    2,119.29x = 2,817,351.04
  5. Step 5: Solve for x
    x = 2,817,351.04/2,119.29
  6. Step 6: Final answer
    x = 1,329.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.