Home / 1,936.45-2,672.36-1,190.85

Finding the Fourth Proportional to 1,936.45, 2,672.36 and 1,190.85

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Solution

The fourth proportional to 1,936.45, 2,672.36 and 1,190.85 is: 1,643.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.45 : 2,672.36 = 1,190.85 : x
  2. Step 2: Convert to fraction form
    1,936.45/2,672.36 = 1,190.85/x
  3. Step 3: Cross multiply
    1,936.45x = 2,672.36 × 1,190.85
  4. Step 4: Simplify right side
    1,936.45x = 3,182,368.40
  5. Step 5: Solve for x
    x = 3,182,368.40/1,936.45
  6. Step 6: Final answer
    x = 1,643.40

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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.