Home / 4,215.26-6,321.72-1,291.94

Finding the Fourth Proportional to 4,215.26, 6,321.72 and 1,291.94

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Solution

The fourth proportional to 4,215.26, 6,321.72 and 1,291.94 is: 1,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.26 : 6,321.72 = 1,291.94 : x
  2. Step 2: Convert to fraction form
    4,215.26/6,321.72 = 1,291.94/x
  3. Step 3: Cross multiply
    4,215.26x = 6,321.72 × 1,291.94
  4. Step 4: Simplify right side
    4,215.26x = 8,167,282.94
  5. Step 5: Solve for x
    x = 8,167,282.94/4,215.26
  6. Step 6: Final answer
    x = 1,937.55

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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.