Home / 3,315.81-4,575.94-1,989.26

Finding the Fourth Proportional to 3,315.81, 4,575.94 and 1,989.26

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Solution

The fourth proportional to 3,315.81, 4,575.94 and 1,989.26 is: 2,745.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.81 : 4,575.94 = 1,989.26 : x
  2. Step 2: Convert to fraction form
    3,315.81/4,575.94 = 1,989.26/x
  3. Step 3: Cross multiply
    3,315.81x = 4,575.94 × 1,989.26
  4. Step 4: Simplify right side
    3,315.81x = 9,102,734.40
  5. Step 5: Solve for x
    x = 9,102,734.40/3,315.81
  6. Step 6: Final answer
    x = 2,745.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.