Home / 2,919.68-4,376.28-1,186.28

Finding the Fourth Proportional to 2,919.68, 4,376.28 and 1,186.28

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Solution

The fourth proportional to 2,919.68, 4,376.28 and 1,186.28 is: 1,778.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.68 : 4,376.28 = 1,186.28 : x
  2. Step 2: Convert to fraction form
    2,919.68/4,376.28 = 1,186.28/x
  3. Step 3: Cross multiply
    2,919.68x = 4,376.28 × 1,186.28
  4. Step 4: Simplify right side
    2,919.68x = 5,191,493.44
  5. Step 5: Solve for x
    x = 5,191,493.44/2,919.68
  6. Step 6: Final answer
    x = 1,778.10

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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.