Home / 2,291.27-3,161.95-1,243.33

Finding the Fourth Proportional to 2,291.27, 3,161.95 and 1,243.33

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Solution

The fourth proportional to 2,291.27, 3,161.95 and 1,243.33 is: 1,715.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.27 : 3,161.95 = 1,243.33 : x
  2. Step 2: Convert to fraction form
    2,291.27/3,161.95 = 1,243.33/x
  3. Step 3: Cross multiply
    2,291.27x = 3,161.95 × 1,243.33
  4. Step 4: Simplify right side
    2,291.27x = 3,931,347.29
  5. Step 5: Solve for x
    x = 3,931,347.29/2,291.27
  6. Step 6: Final answer
    x = 1,715.79

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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.