Home / 1,284.34-1,926.52-418.66

Finding the Fourth Proportional to 1,284.34, 1,926.52 and 418.66

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Solution

The fourth proportional to 1,284.34, 1,926.52 and 418.66 is: 627.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.34 : 1,926.52 = 418.66 : x
  2. Step 2: Convert to fraction form
    1,284.34/1,926.52 = 418.66/x
  3. Step 3: Cross multiply
    1,284.34x = 1,926.52 × 418.66
  4. Step 4: Simplify right side
    1,284.34x = 806,556.86
  5. Step 5: Solve for x
    x = 806,556.86/1,284.34
  6. Step 6: Final answer
    x = 627.99

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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.