Home / 1,813.92-2,719.68-1,165.20

Finding the Fourth Proportional to 1,813.92, 2,719.68 and 1,165.20

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Solution

The fourth proportional to 1,813.92, 2,719.68 and 1,165.20 is: 1,747.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.92 : 2,719.68 = 1,165.20 : x
  2. Step 2: Convert to fraction form
    1,813.92/2,719.68 = 1,165.20/x
  3. Step 3: Cross multiply
    1,813.92x = 2,719.68 × 1,165.20
  4. Step 4: Simplify right side
    1,813.92x = 3,168,971.14
  5. Step 5: Solve for x
    x = 3,168,971.14/1,813.92
  6. Step 6: Final answer
    x = 1,747.03

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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.