Home / 4,231.78-6,347.60-1,309.74

Finding the Fourth Proportional to 4,231.78, 6,347.60 and 1,309.74

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Solution

The fourth proportional to 4,231.78, 6,347.60 and 1,309.74 is: 1,964.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,231.78 : 6,347.60 = 1,309.74 : x
  2. Step 2: Convert to fraction form
    4,231.78/6,347.60 = 1,309.74/x
  3. Step 3: Cross multiply
    4,231.78x = 6,347.60 × 1,309.74
  4. Step 4: Simplify right side
    4,231.78x = 8,313,705.62
  5. Step 5: Solve for x
    x = 8,313,705.62/4,231.78
  6. Step 6: Final answer
    x = 1,964.59

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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.