Home / 3,678.16-5,075.73-2,105.95

Finding the Fourth Proportional to 3,678.16, 5,075.73 and 2,105.95

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Solution

The fourth proportional to 3,678.16, 5,075.73 and 2,105.95 is: 2,906.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.16 : 5,075.73 = 2,105.95 : x
  2. Step 2: Convert to fraction form
    3,678.16/5,075.73 = 2,105.95/x
  3. Step 3: Cross multiply
    3,678.16x = 5,075.73 × 2,105.95
  4. Step 4: Simplify right side
    3,678.16x = 10,689,197.69
  5. Step 5: Solve for x
    x = 10,689,197.69/3,678.16
  6. Step 6: Final answer
    x = 2,906.13

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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.