Home / 3,981.28-5,970.84-1,383.88

Finding the Fourth Proportional to 3,981.28, 5,970.84 and 1,383.88

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Solution

The fourth proportional to 3,981.28, 5,970.84 and 1,383.88 is: 2,075.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.28 : 5,970.84 = 1,383.88 : x
  2. Step 2: Convert to fraction form
    3,981.28/5,970.84 = 1,383.88/x
  3. Step 3: Cross multiply
    3,981.28x = 5,970.84 × 1,383.88
  4. Step 4: Simplify right side
    3,981.28x = 8,262,926.06
  5. Step 5: Solve for x
    x = 8,262,926.06/3,981.28
  6. Step 6: Final answer
    x = 2,075.44

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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.