Home / 3,989.37-5,987.70-3,061.92

Finding the Fourth Proportional to 3,989.37, 5,987.70 and 3,061.92

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Solution

The fourth proportional to 3,989.37, 5,987.70 and 3,061.92 is: 4,595.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.37 : 5,987.70 = 3,061.92 : x
  2. Step 2: Convert to fraction form
    3,989.37/5,987.70 = 3,061.92/x
  3. Step 3: Cross multiply
    3,989.37x = 5,987.70 × 3,061.92
  4. Step 4: Simplify right side
    3,989.37x = 18,333,858.38
  5. Step 5: Solve for x
    x = 18,333,858.38/3,989.37
  6. Step 6: Final answer
    x = 4,595.68

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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.