Home / 5,172.32-7,137.85-2,814.51

Finding the Fourth Proportional to 5,172.32, 7,137.85 and 2,814.51

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Solution

The fourth proportional to 5,172.32, 7,137.85 and 2,814.51 is: 3,884.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.32 : 7,137.85 = 2,814.51 : x
  2. Step 2: Convert to fraction form
    5,172.32/7,137.85 = 2,814.51/x
  3. Step 3: Cross multiply
    5,172.32x = 7,137.85 × 2,814.51
  4. Step 4: Simplify right side
    5,172.32x = 20,089,514.51
  5. Step 5: Solve for x
    x = 20,089,514.51/5,172.32
  6. Step 6: Final answer
    x = 3,884.05

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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.