Home / 2,291.09-3,161.73-1,243.16

Finding the Fourth Proportional to 2,291.09, 3,161.73 and 1,243.16

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Solution

The fourth proportional to 2,291.09, 3,161.73 and 1,243.16 is: 1,715.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.09 : 3,161.73 = 1,243.16 : x
  2. Step 2: Convert to fraction form
    2,291.09/3,161.73 = 1,243.16/x
  3. Step 3: Cross multiply
    2,291.09x = 3,161.73 × 1,243.16
  4. Step 4: Simplify right side
    2,291.09x = 3,930,536.27
  5. Step 5: Solve for x
    x = 3,930,536.27/2,291.09
  6. Step 6: Final answer
    x = 1,715.57

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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.