Home / 3,405.20-4,699.13-1,989.27

Finding the Fourth Proportional to 3,405.20, 4,699.13 and 1,989.27

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Solution

The fourth proportional to 3,405.20, 4,699.13 and 1,989.27 is: 2,745.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.20 : 4,699.13 = 1,989.27 : x
  2. Step 2: Convert to fraction form
    3,405.20/4,699.13 = 1,989.27/x
  3. Step 3: Cross multiply
    3,405.20x = 4,699.13 × 1,989.27
  4. Step 4: Simplify right side
    3,405.20x = 9,347,828.39
  5. Step 5: Solve for x
    x = 9,347,828.39/3,405.20
  6. Step 6: Final answer
    x = 2,745.17

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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.