Home / 3,215.37-4,820.72-2,172.77

Finding the Fourth Proportional to 3,215.37, 4,820.72 and 2,172.77

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Solution

The fourth proportional to 3,215.37, 4,820.72 and 2,172.77 is: 3,257.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.37 : 4,820.72 = 2,172.77 : x
  2. Step 2: Convert to fraction form
    3,215.37/4,820.72 = 2,172.77/x
  3. Step 3: Cross multiply
    3,215.37x = 4,820.72 × 2,172.77
  4. Step 4: Simplify right side
    3,215.37x = 10,474,297.12
  5. Step 5: Solve for x
    x = 10,474,297.12/3,215.37
  6. Step 6: Final answer
    x = 3,257.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.