Home / 1,936.35-2,672.17-1,140.21

Finding the Fourth Proportional to 1,936.35, 2,672.17 and 1,140.21

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Solution

The fourth proportional to 1,936.35, 2,672.17 and 1,140.21 is: 1,573.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.35 : 2,672.17 = 1,140.21 : x
  2. Step 2: Convert to fraction form
    1,936.35/2,672.17 = 1,140.21/x
  3. Step 3: Cross multiply
    1,936.35x = 2,672.17 × 1,140.21
  4. Step 4: Simplify right side
    1,936.35x = 3,046,832.11
  5. Step 5: Solve for x
    x = 3,046,832.11/1,936.35
  6. Step 6: Final answer
    x = 1,573.49

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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.