Home / 1,512.22-2,087.67-945.22

Finding the Fourth Proportional to 1,512.22, 2,087.67 and 945.22

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Solution

The fourth proportional to 1,512.22, 2,087.67 and 945.22 is: 1,304.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.22 : 2,087.67 = 945.22 : x
  2. Step 2: Convert to fraction form
    1,512.22/2,087.67 = 945.22/x
  3. Step 3: Cross multiply
    1,512.22x = 2,087.67 × 945.22
  4. Step 4: Simplify right side
    1,512.22x = 1,973,309.68
  5. Step 5: Solve for x
    x = 1,973,309.68/1,512.22
  6. Step 6: Final answer
    x = 1,304.91

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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.