Home / 1,911.33-2,636.28-1,343.25

Finding the Fourth Proportional to 1,911.33, 2,636.28 and 1,343.25

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Solution

The fourth proportional to 1,911.33, 2,636.28 and 1,343.25 is: 1,852.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.33 : 2,636.28 = 1,343.25 : x
  2. Step 2: Convert to fraction form
    1,911.33/2,636.28 = 1,343.25/x
  3. Step 3: Cross multiply
    1,911.33x = 2,636.28 × 1,343.25
  4. Step 4: Simplify right side
    1,911.33x = 3,541,183.11
  5. Step 5: Solve for x
    x = 3,541,183.11/1,911.33
  6. Step 6: Final answer
    x = 1,852.73

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1.5x scale

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.