Home / 2,172.34-2,997.99-1,228.24

Finding the Fourth Proportional to 2,172.34, 2,997.99 and 1,228.24

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Solution

The fourth proportional to 2,172.34, 2,997.99 and 1,228.24 is: 1,695.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.34 : 2,997.99 = 1,228.24 : x
  2. Step 2: Convert to fraction form
    2,172.34/2,997.99 = 1,228.24/x
  3. Step 3: Cross multiply
    2,172.34x = 2,997.99 × 1,228.24
  4. Step 4: Simplify right side
    2,172.34x = 3,682,251.24
  5. Step 5: Solve for x
    x = 3,682,251.24/2,172.34
  6. Step 6: Final answer
    x = 1,695.06

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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.