Home / 3,405.94-4,699.68-1,913.57

Finding the Fourth Proportional to 3,405.94, 4,699.68 and 1,913.57

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Solution

The fourth proportional to 3,405.94, 4,699.68 and 1,913.57 is: 2,640.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.94 : 4,699.68 = 1,913.57 : x
  2. Step 2: Convert to fraction form
    3,405.94/4,699.68 = 1,913.57/x
  3. Step 3: Cross multiply
    3,405.94x = 4,699.68 × 1,913.57
  4. Step 4: Simplify right side
    3,405.94x = 8,993,171.23
  5. Step 5: Solve for x
    x = 8,993,171.23/3,405.94
  6. Step 6: Final answer
    x = 2,640.44

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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.