Home / 1,622.76-2,238.30-1,272.84

Finding the Fourth Proportional to 1,622.76, 2,238.30 and 1,272.84

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Solution

The fourth proportional to 1,622.76, 2,238.30 and 1,272.84 is: 1,755.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.76 : 2,238.30 = 1,272.84 : x
  2. Step 2: Convert to fraction form
    1,622.76/2,238.30 = 1,272.84/x
  3. Step 3: Cross multiply
    1,622.76x = 2,238.30 × 1,272.84
  4. Step 4: Simplify right side
    1,622.76x = 2,848,997.77
  5. Step 5: Solve for x
    x = 2,848,997.77/1,622.76
  6. Step 6: Final answer
    x = 1,755.65

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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.