Home / 1,669.21-2,288.57-1,639.58

Finding the Fourth Proportional to 1,669.21, 2,288.57 and 1,639.58

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Solution

The fourth proportional to 1,669.21, 2,288.57 and 1,639.58 is: 2,247.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.21 : 2,288.57 = 1,639.58 : x
  2. Step 2: Convert to fraction form
    1,669.21/2,288.57 = 1,639.58/x
  3. Step 3: Cross multiply
    1,669.21x = 2,288.57 × 1,639.58
  4. Step 4: Simplify right side
    1,669.21x = 3,752,273.96
  5. Step 5: Solve for x
    x = 3,752,273.96/1,669.21
  6. Step 6: Final answer
    x = 2,247.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.