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Finding the Fourth Proportional to 3,927.89, 5,891.84 and 1,330.63

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Solution

The fourth proportional to 3,927.89, 5,891.84 and 1,330.63 is: 1,995.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.89 : 5,891.84 = 1,330.63 : x
  2. Step 2: Convert to fraction form
    3,927.89/5,891.84 = 1,330.63/x
  3. Step 3: Cross multiply
    3,927.89x = 5,891.84 × 1,330.63
  4. Step 4: Simplify right side
    3,927.89x = 7,839,859.06
  5. Step 5: Solve for x
    x = 7,839,859.06/3,927.89
  6. Step 6: Final answer
    x = 1,995.95

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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.