Home / 3,139.78-4,706.19-1,493.86

Finding the Fourth Proportional to 3,139.78, 4,706.19 and 1,493.86

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Solution

The fourth proportional to 3,139.78, 4,706.19 and 1,493.86 is: 2,239.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.78 : 4,706.19 = 1,493.86 : x
  2. Step 2: Convert to fraction form
    3,139.78/4,706.19 = 1,493.86/x
  3. Step 3: Cross multiply
    3,139.78x = 4,706.19 × 1,493.86
  4. Step 4: Simplify right side
    3,139.78x = 7,030,388.99
  5. Step 5: Solve for x
    x = 7,030,388.99/3,139.78
  6. Step 6: Final answer
    x = 2,239.13

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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.