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Finding the Fourth Proportional to 3,992.04, 5,988.24 and 1,395

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Solution

The fourth proportional to 3,992.04, 5,988.24 and 1,395 is: 2,092.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.04 : 5,988.24 = 1,395 : x
  2. Step 2: Convert to fraction form
    3,992.04/5,988.24 = 1,395/x
  3. Step 3: Cross multiply
    3,992.04x = 5,988.24 × 1,395
  4. Step 4: Simplify right side
    3,992.04x = 8,353,594.80
  5. Step 5: Solve for x
    x = 8,353,594.80/3,992.04
  6. Step 6: Final answer
    x = 2,092.56

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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.