Home / 1,512.77-2,087.82-849.78

Finding the Fourth Proportional to 1,512.77, 2,087.82 and 849.78

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Solution

The fourth proportional to 1,512.77, 2,087.82 and 849.78 is: 1,172.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.77 : 2,087.82 = 849.78 : x
  2. Step 2: Convert to fraction form
    1,512.77/2,087.82 = 849.78/x
  3. Step 3: Cross multiply
    1,512.77x = 2,087.82 × 849.78
  4. Step 4: Simplify right side
    1,512.77x = 1,774,187.68
  5. Step 5: Solve for x
    x = 1,774,187.68/1,512.77
  6. Step 6: Final answer
    x = 1,172.81

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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.