Home / 3,420.72-5,131.08-1,112.22

Finding the Fourth Proportional to 3,420.72, 5,131.08 and 1,112.22

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Solution

The fourth proportional to 3,420.72, 5,131.08 and 1,112.22 is: 1,668.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.72 : 5,131.08 = 1,112.22 : x
  2. Step 2: Convert to fraction form
    3,420.72/5,131.08 = 1,112.22/x
  3. Step 3: Cross multiply
    3,420.72x = 5,131.08 × 1,112.22
  4. Step 4: Simplify right side
    3,420.72x = 5,706,889.80
  5. Step 5: Solve for x
    x = 5,706,889.80/3,420.72
  6. Step 6: Final answer
    x = 1,668.33

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1.5x scale

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.