Home / 3,919.61-5,878.06-1,145.57

Finding the Fourth Proportional to 3,919.61, 5,878.06 and 1,145.57

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Solution

The fourth proportional to 3,919.61, 5,878.06 and 1,145.57 is: 1,717.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.61 : 5,878.06 = 1,145.57 : x
  2. Step 2: Convert to fraction form
    3,919.61/5,878.06 = 1,145.57/x
  3. Step 3: Cross multiply
    3,919.61x = 5,878.06 × 1,145.57
  4. Step 4: Simplify right side
    3,919.61x = 6,733,696.94
  5. Step 5: Solve for x
    x = 6,733,696.94/3,919.61
  6. Step 6: Final answer
    x = 1,717.95

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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.