Home / 2,919.11-4,028.61-1,660.55

Finding the Fourth Proportional to 2,919.11, 4,028.61 and 1,660.55

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Solution

The fourth proportional to 2,919.11, 4,028.61 and 1,660.55 is: 2,291.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.11 : 4,028.61 = 1,660.55 : x
  2. Step 2: Convert to fraction form
    2,919.11/4,028.61 = 1,660.55/x
  3. Step 3: Cross multiply
    2,919.11x = 4,028.61 × 1,660.55
  4. Step 4: Simplify right side
    2,919.11x = 6,689,712.41
  5. Step 5: Solve for x
    x = 6,689,712.41/2,919.11
  6. Step 6: Final answer
    x = 2,291.69

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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.