Home / 4,260.31-6,390.25-1,338.55

Finding the Fourth Proportional to 4,260.31, 6,390.25 and 1,338.55

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Solution

The fourth proportional to 4,260.31, 6,390.25 and 1,338.55 is: 2,007.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,260.31 : 6,390.25 = 1,338.55 : x
  2. Step 2: Convert to fraction form
    4,260.31/6,390.25 = 1,338.55/x
  3. Step 3: Cross multiply
    4,260.31x = 6,390.25 × 1,338.55
  4. Step 4: Simplify right side
    4,260.31x = 8,553,649.82
  5. Step 5: Solve for x
    x = 8,553,649.82/4,260.31
  6. Step 6: Final answer
    x = 2,007.75

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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.