Home / 3,072.16-4,239.64-1,745.84

Finding the Fourth Proportional to 3,072.16, 4,239.64 and 1,745.84

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Solution

The fourth proportional to 3,072.16, 4,239.64 and 1,745.84 is: 2,409.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.16 : 4,239.64 = 1,745.84 : x
  2. Step 2: Convert to fraction form
    3,072.16/4,239.64 = 1,745.84/x
  3. Step 3: Cross multiply
    3,072.16x = 4,239.64 × 1,745.84
  4. Step 4: Simplify right side
    3,072.16x = 7,401,733.10
  5. Step 5: Solve for x
    x = 7,401,733.10/3,072.16
  6. Step 6: Final answer
    x = 2,409.29

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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.