Home / 2,128.13-3,189.83-1,606.44

Finding the Fourth Proportional to 2,128.13, 3,189.83 and 1,606.44

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Solution

The fourth proportional to 2,128.13, 3,189.83 and 1,606.44 is: 2,407.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.13 : 3,189.83 = 1,606.44 : x
  2. Step 2: Convert to fraction form
    2,128.13/3,189.83 = 1,606.44/x
  3. Step 3: Cross multiply
    2,128.13x = 3,189.83 × 1,606.44
  4. Step 4: Simplify right side
    2,128.13x = 5,124,270.51
  5. Step 5: Solve for x
    x = 5,124,270.51/2,128.13
  6. Step 6: Final answer
    x = 2,407.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.