Home / 1,605.92-2,221.44-1,343.12

Finding the Fourth Proportional to 1,605.92, 2,221.44 and 1,343.12

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Solution

The fourth proportional to 1,605.92, 2,221.44 and 1,343.12 is: 1,857.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.92 : 2,221.44 = 1,343.12 : x
  2. Step 2: Convert to fraction form
    1,605.92/2,221.44 = 1,343.12/x
  3. Step 3: Cross multiply
    1,605.92x = 2,221.44 × 1,343.12
  4. Step 4: Simplify right side
    1,605.92x = 2,983,660.49
  5. Step 5: Solve for x
    x = 2,983,660.49/1,605.92
  6. Step 6: Final answer
    x = 1,857.91

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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.