Home / 1,936.11-2,671.84-1,139.46

Finding the Fourth Proportional to 1,936.11, 2,671.84 and 1,139.46

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Solution

The fourth proportional to 1,936.11, 2,671.84 and 1,139.46 is: 1,572.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936.11 : 2,671.84 = 1,139.46 : x
  2. Step 2: Convert to fraction form
    1,936.11/2,671.84 = 1,139.46/x
  3. Step 3: Cross multiply
    1,936.11x = 2,671.84 × 1,139.46
  4. Step 4: Simplify right side
    1,936.11x = 3,044,461.24
  5. Step 5: Solve for x
    x = 3,044,461.24/1,936.11
  6. Step 6: Final answer
    x = 1,572.46

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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.