Home / 5,172.54-7,138.07-2,814.69

Finding the Fourth Proportional to 5,172.54, 7,138.07 and 2,814.69

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Solution

The fourth proportional to 5,172.54, 7,138.07 and 2,814.69 is: 3,884.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.54 : 7,138.07 = 2,814.69 : x
  2. Step 2: Convert to fraction form
    5,172.54/7,138.07 = 2,814.69/x
  3. Step 3: Cross multiply
    5,172.54x = 7,138.07 × 2,814.69
  4. Step 4: Simplify right side
    5,172.54x = 20,091,440.17
  5. Step 5: Solve for x
    x = 20,091,440.17/5,172.54
  6. Step 6: Final answer
    x = 3,884.25

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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.