Home / 2,320.17-3,201.73-1,272.21

Finding the Fourth Proportional to 2,320.17, 3,201.73 and 1,272.21

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Solution

The fourth proportional to 2,320.17, 3,201.73 and 1,272.21 is: 1,755.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.17 : 3,201.73 = 1,272.21 : x
  2. Step 2: Convert to fraction form
    2,320.17/3,201.73 = 1,272.21/x
  3. Step 3: Cross multiply
    2,320.17x = 3,201.73 × 1,272.21
  4. Step 4: Simplify right side
    2,320.17x = 4,073,272.92
  5. Step 5: Solve for x
    x = 4,073,272.92/2,320.17
  6. Step 6: Final answer
    x = 1,755.59

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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.