Home / 5,172.29-7,137.78-2,814.43

Finding the Fourth Proportional to 5,172.29, 7,137.78 and 2,814.43

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Solution

The fourth proportional to 5,172.29, 7,137.78 and 2,814.43 is: 3,883.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.29 : 7,137.78 = 2,814.43 : x
  2. Step 2: Convert to fraction form
    5,172.29/7,137.78 = 2,814.43/x
  3. Step 3: Cross multiply
    5,172.29x = 7,137.78 × 2,814.43
  4. Step 4: Simplify right side
    5,172.29x = 20,088,817.05
  5. Step 5: Solve for x
    x = 20,088,817.05/5,172.29
  6. Step 6: Final answer
    x = 3,883.93

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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.