Home / 5,382.05-8,071.85-1,919.30

Finding the Fourth Proportional to 5,382.05, 8,071.85 and 1,919.30

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Solution

The fourth proportional to 5,382.05, 8,071.85 and 1,919.30 is: 2,878.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.05 : 8,071.85 = 1,919.30 : x
  2. Step 2: Convert to fraction form
    5,382.05/8,071.85 = 1,919.30/x
  3. Step 3: Cross multiply
    5,382.05x = 8,071.85 × 1,919.30
  4. Step 4: Simplify right side
    5,382.05x = 15,492,266.14
  5. Step 5: Solve for x
    x = 15,492,266.14/5,382.05
  6. Step 6: Final answer
    x = 2,878.51

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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.