Home / 4,260.78-6,392.16-1,339.38

Finding the Fourth Proportional to 4,260.78, 6,392.16 and 1,339.38

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Solution

The fourth proportional to 4,260.78, 6,392.16 and 1,339.38 is: 2,009.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,260.78 : 6,392.16 = 1,339.38 : x
  2. Step 2: Convert to fraction form
    4,260.78/6,392.16 = 1,339.38/x
  3. Step 3: Cross multiply
    4,260.78x = 6,392.16 × 1,339.38
  4. Step 4: Simplify right side
    4,260.78x = 8,561,531.26
  5. Step 5: Solve for x
    x = 8,561,531.26/4,260.78
  6. Step 6: Final answer
    x = 2,009.38

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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.