Home / 2,919.38-4,028.83-1,660.35

Finding the Fourth Proportional to 2,919.38, 4,028.83 and 1,660.35

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Solution

The fourth proportional to 2,919.38, 4,028.83 and 1,660.35 is: 2,291.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.38 : 4,028.83 = 1,660.35 : x
  2. Step 2: Convert to fraction form
    2,919.38/4,028.83 = 1,660.35/x
  3. Step 3: Cross multiply
    2,919.38x = 4,028.83 × 1,660.35
  4. Step 4: Simplify right side
    2,919.38x = 6,689,263.74
  5. Step 5: Solve for x
    x = 6,689,263.74/2,919.38
  6. Step 6: Final answer
    x = 2,291.33

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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.