Home / 3,239.89-4,861.80-1,291.94

Finding the Fourth Proportional to 3,239.89, 4,861.80 and 1,291.94

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Solution

The fourth proportional to 3,239.89, 4,861.80 and 1,291.94 is: 1,938.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.89 : 4,861.80 = 1,291.94 : x
  2. Step 2: Convert to fraction form
    3,239.89/4,861.80 = 1,291.94/x
  3. Step 3: Cross multiply
    3,239.89x = 4,861.80 × 1,291.94
  4. Step 4: Simplify right side
    3,239.89x = 6,281,153.89
  5. Step 5: Solve for x
    x = 6,281,153.89/3,239.89
  6. Step 6: Final answer
    x = 1,938.69

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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.