Home / 3,886.40-5,825.94-1,936.76

Finding the Fourth Proportional to 3,886.40, 5,825.94 and 1,936.76

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Solution

The fourth proportional to 3,886.40, 5,825.94 and 1,936.76 is: 2,903.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.40 : 5,825.94 = 1,936.76 : x
  2. Step 2: Convert to fraction form
    3,886.40/5,825.94 = 1,936.76/x
  3. Step 3: Cross multiply
    3,886.40x = 5,825.94 × 1,936.76
  4. Step 4: Simplify right side
    3,886.40x = 11,283,447.55
  5. Step 5: Solve for x
    x = 11,283,447.55/3,886.40
  6. Step 6: Final answer
    x = 2,903.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.