Home / 1,519.34-2,278.85-423.68

Finding the Fourth Proportional to 1,519.34, 2,278.85 and 423.68

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Solution

The fourth proportional to 1,519.34, 2,278.85 and 423.68 is: 635.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.34 : 2,278.85 = 423.68 : x
  2. Step 2: Convert to fraction form
    1,519.34/2,278.85 = 423.68/x
  3. Step 3: Cross multiply
    1,519.34x = 2,278.85 × 423.68
  4. Step 4: Simplify right side
    1,519.34x = 965,489.66
  5. Step 5: Solve for x
    x = 965,489.66/1,519.34
  6. Step 6: Final answer
    x = 635.47

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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.