Home / 5,172.08-7,137.32-2,814.16

Finding the Fourth Proportional to 5,172.08, 7,137.32 and 2,814.16

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Solution

The fourth proportional to 5,172.08, 7,137.32 and 2,814.16 is: 3,883.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.08 : 7,137.32 = 2,814.16 : x
  2. Step 2: Convert to fraction form
    5,172.08/7,137.32 = 2,814.16/x
  3. Step 3: Cross multiply
    5,172.08x = 7,137.32 × 2,814.16
  4. Step 4: Simplify right side
    5,172.08x = 20,085,560.45
  5. Step 5: Solve for x
    x = 20,085,560.45/5,172.08
  6. Step 6: Final answer
    x = 3,883.46

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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.