Home / 1,519.14-2,278.79-423.57

Finding the Fourth Proportional to 1,519.14, 2,278.79 and 423.57

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Solution

The fourth proportional to 1,519.14, 2,278.79 and 423.57 is: 635.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.14 : 2,278.79 = 423.57 : x
  2. Step 2: Convert to fraction form
    1,519.14/2,278.79 = 423.57/x
  3. Step 3: Cross multiply
    1,519.14x = 2,278.79 × 423.57
  4. Step 4: Simplify right side
    1,519.14x = 965,219.27
  5. Step 5: Solve for x
    x = 965,219.27/1,519.14
  6. Step 6: Final answer
    x = 635.37

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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.