Home / 3,847.14-5,307.78-2,168.34

Finding the Fourth Proportional to 3,847.14, 5,307.78 and 2,168.34

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Solution

The fourth proportional to 3,847.14, 5,307.78 and 2,168.34 is: 2,991.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.14 : 5,307.78 = 2,168.34 : x
  2. Step 2: Convert to fraction form
    3,847.14/5,307.78 = 2,168.34/x
  3. Step 3: Cross multiply
    3,847.14x = 5,307.78 × 2,168.34
  4. Step 4: Simplify right side
    3,847.14x = 11,509,071.69
  5. Step 5: Solve for x
    x = 11,509,071.69/3,847.14
  6. Step 6: Final answer
    x = 2,991.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.