Home / 2,290.92-3,161.43-1,242.96

Finding the Fourth Proportional to 2,290.92, 3,161.43 and 1,242.96

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Solution

The fourth proportional to 2,290.92, 3,161.43 and 1,242.96 is: 1,715.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.92 : 3,161.43 = 1,242.96 : x
  2. Step 2: Convert to fraction form
    2,290.92/3,161.43 = 1,242.96/x
  3. Step 3: Cross multiply
    2,290.92x = 3,161.43 × 1,242.96
  4. Step 4: Simplify right side
    2,290.92x = 3,929,531.03
  5. Step 5: Solve for x
    x = 3,929,531.03/2,290.92
  6. Step 6: Final answer
    x = 1,715.26

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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.