Home / 4,261.86-6,390.77-1,338.57

Finding the Fourth Proportional to 4,261.86, 6,390.77 and 1,338.57

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Solution

The fourth proportional to 4,261.86, 6,390.77 and 1,338.57 is: 2,007.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,261.86 : 6,390.77 = 1,338.57 : x
  2. Step 2: Convert to fraction form
    4,261.86/6,390.77 = 1,338.57/x
  3. Step 3: Cross multiply
    4,261.86x = 6,390.77 × 1,338.57
  4. Step 4: Simplify right side
    4,261.86x = 8,554,486.31
  5. Step 5: Solve for x
    x = 8,554,486.31/4,261.86
  6. Step 6: Final answer
    x = 2,007.22

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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.