Home / 1,911.92-2,868.69-1,045.22

Finding the Fourth Proportional to 1,911.92, 2,868.69 and 1,045.22

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Solution

The fourth proportional to 1,911.92, 2,868.69 and 1,045.22 is: 1,568.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.92 : 2,868.69 = 1,045.22 : x
  2. Step 2: Convert to fraction form
    1,911.92/2,868.69 = 1,045.22/x
  3. Step 3: Cross multiply
    1,911.92x = 2,868.69 × 1,045.22
  4. Step 4: Simplify right side
    1,911.92x = 2,998,412.16
  5. Step 5: Solve for x
    x = 2,998,412.16/1,911.92
  6. Step 6: Final answer
    x = 1,568.27

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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.