Home / 1,519.26-2,278.53-423.70

Finding the Fourth Proportional to 1,519.26, 2,278.53 and 423.70

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Solution

The fourth proportional to 1,519.26, 2,278.53 and 423.70 is: 635.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.26 : 2,278.53 = 423.70 : x
  2. Step 2: Convert to fraction form
    1,519.26/2,278.53 = 423.70/x
  3. Step 3: Cross multiply
    1,519.26x = 2,278.53 × 423.70
  4. Step 4: Simplify right side
    1,519.26x = 965,407.46
  5. Step 5: Solve for x
    x = 965,407.46/1,519.26
  6. Step 6: Final answer
    x = 635.45

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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.