Home / 3,990.05-5,982.54-1,357.35

Finding the Fourth Proportional to 3,990.05, 5,982.54 and 1,357.35

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Solution

The fourth proportional to 3,990.05, 5,982.54 and 1,357.35 is: 2,035.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.05 : 5,982.54 = 1,357.35 : x
  2. Step 2: Convert to fraction form
    3,990.05/5,982.54 = 1,357.35/x
  3. Step 3: Cross multiply
    3,990.05x = 5,982.54 × 1,357.35
  4. Step 4: Simplify right side
    3,990.05x = 8,120,400.67
  5. Step 5: Solve for x
    x = 8,120,400.67/3,990.05
  6. Step 6: Final answer
    x = 2,035.16

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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.