Home / 2,172.24-2,997.79-1,332.68

Finding the Fourth Proportional to 2,172.24, 2,997.79 and 1,332.68

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Solution

The fourth proportional to 2,172.24, 2,997.79 and 1,332.68 is: 1,839.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.24 : 2,997.79 = 1,332.68 : x
  2. Step 2: Convert to fraction form
    2,172.24/2,997.79 = 1,332.68/x
  3. Step 3: Cross multiply
    2,172.24x = 2,997.79 × 1,332.68
  4. Step 4: Simplify right side
    2,172.24x = 3,995,076.46
  5. Step 5: Solve for x
    x = 3,995,076.46/2,172.24
  6. Step 6: Final answer
    x = 1,839.15

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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.