Home / 3,494.35-5,239.86-1,271.60

Finding the Fourth Proportional to 3,494.35, 5,239.86 and 1,271.60

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Solution

The fourth proportional to 3,494.35, 5,239.86 and 1,271.60 is: 1,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,494.35 : 5,239.86 = 1,271.60 : x
  2. Step 2: Convert to fraction form
    3,494.35/5,239.86 = 1,271.60/x
  3. Step 3: Cross multiply
    3,494.35x = 5,239.86 × 1,271.60
  4. Step 4: Simplify right side
    3,494.35x = 6,663,031.28
  5. Step 5: Solve for x
    x = 6,663,031.28/3,494.35
  6. Step 6: Final answer
    x = 1,906.80

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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.