Home / 3,431.70-5,148.95-1,240.61

Finding the Fourth Proportional to 3,431.70, 5,148.95 and 1,240.61

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Solution

The fourth proportional to 3,431.70, 5,148.95 and 1,240.61 is: 1,861.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.70 : 5,148.95 = 1,240.61 : x
  2. Step 2: Convert to fraction form
    3,431.70/5,148.95 = 1,240.61/x
  3. Step 3: Cross multiply
    3,431.70x = 5,148.95 × 1,240.61
  4. Step 4: Simplify right side
    3,431.70x = 6,387,806.91
  5. Step 5: Solve for x
    x = 6,387,806.91/3,431.70
  6. Step 6: Final answer
    x = 1,861.41

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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.