Home / 5,172.47-7,138.16-2,814.77

Finding the Fourth Proportional to 5,172.47, 7,138.16 and 2,814.77

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Solution

The fourth proportional to 5,172.47, 7,138.16 and 2,814.77 is: 3,884.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.47 : 7,138.16 = 2,814.77 : x
  2. Step 2: Convert to fraction form
    5,172.47/7,138.16 = 2,814.77/x
  3. Step 3: Cross multiply
    5,172.47x = 7,138.16 × 2,814.77
  4. Step 4: Simplify right side
    5,172.47x = 20,092,249.97
  5. Step 5: Solve for x
    x = 20,092,249.97/5,172.47
  6. Step 6: Final answer
    x = 3,884.46

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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.