Home / 1,629.10-2,253.99-1,379.62

Finding the Fourth Proportional to 1,629.10, 2,253.99 and 1,379.62

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Solution

The fourth proportional to 1,629.10, 2,253.99 and 1,379.62 is: 1,908.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.10 : 2,253.99 = 1,379.62 : x
  2. Step 2: Convert to fraction form
    1,629.10/2,253.99 = 1,379.62/x
  3. Step 3: Cross multiply
    1,629.10x = 2,253.99 × 1,379.62
  4. Step 4: Simplify right side
    1,629.10x = 3,109,649.68
  5. Step 5: Solve for x
    x = 3,109,649.68/1,629.10
  6. Step 6: Final answer
    x = 1,908.81

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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.