Home / 2,115.36-2,919.06-1,231.02

Finding the Fourth Proportional to 2,115.36, 2,919.06 and 1,231.02

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Solution

The fourth proportional to 2,115.36, 2,919.06 and 1,231.02 is: 1,698.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.36 : 2,919.06 = 1,231.02 : x
  2. Step 2: Convert to fraction form
    2,115.36/2,919.06 = 1,231.02/x
  3. Step 3: Cross multiply
    2,115.36x = 2,919.06 × 1,231.02
  4. Step 4: Simplify right side
    2,115.36x = 3,593,421.24
  5. Step 5: Solve for x
    x = 3,593,421.24/2,115.36
  6. Step 6: Final answer
    x = 1,698.73

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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.