Home / 1,519.18-2,278.49-423.34

Finding the Fourth Proportional to 1,519.18, 2,278.49 and 423.34

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Solution

The fourth proportional to 1,519.18, 2,278.49 and 423.34 is: 634.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.18 : 2,278.49 = 423.34 : x
  2. Step 2: Convert to fraction form
    1,519.18/2,278.49 = 423.34/x
  3. Step 3: Cross multiply
    1,519.18x = 2,278.49 × 423.34
  4. Step 4: Simplify right side
    1,519.18x = 964,568.14
  5. Step 5: Solve for x
    x = 964,568.14/1,519.18
  6. Step 6: Final answer
    x = 634.93

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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.