Home / 5,172.27-7,137.75-2,814.42

Finding the Fourth Proportional to 5,172.27, 7,137.75 and 2,814.42

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Solution

The fourth proportional to 5,172.27, 7,137.75 and 2,814.42 is: 3,883.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.27 : 7,137.75 = 2,814.42 : x
  2. Step 2: Convert to fraction form
    5,172.27/7,137.75 = 2,814.42/x
  3. Step 3: Cross multiply
    5,172.27x = 7,137.75 × 2,814.42
  4. Step 4: Simplify right side
    5,172.27x = 20,088,626.36
  5. Step 5: Solve for x
    x = 20,088,626.36/5,172.27
  6. Step 6: Final answer
    x = 3,883.91

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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.