Home / 2,148.78-3,226.14-1,109.64

Finding the Fourth Proportional to 2,148.78, 3,226.14 and 1,109.64

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Solution

The fourth proportional to 2,148.78, 3,226.14 and 1,109.64 is: 1,665.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.78 : 3,226.14 = 1,109.64 : x
  2. Step 2: Convert to fraction form
    2,148.78/3,226.14 = 1,109.64/x
  3. Step 3: Cross multiply
    2,148.78x = 3,226.14 × 1,109.64
  4. Step 4: Simplify right side
    2,148.78x = 3,579,853.99
  5. Step 5: Solve for x
    x = 3,579,853.99/2,148.78
  6. Step 6: Final answer
    x = 1,665.99

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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.