Home / 3,678.30-5,075.92-2,106.09

Finding the Fourth Proportional to 3,678.30, 5,075.92 and 2,106.09

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Solution

The fourth proportional to 3,678.30, 5,075.92 and 2,106.09 is: 2,906.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.30 : 5,075.92 = 2,106.09 : x
  2. Step 2: Convert to fraction form
    3,678.30/5,075.92 = 2,106.09/x
  3. Step 3: Cross multiply
    3,678.30x = 5,075.92 × 2,106.09
  4. Step 4: Simplify right side
    3,678.30x = 10,690,318.97
  5. Step 5: Solve for x
    x = 10,690,318.97/3,678.30
  6. Step 6: Final answer
    x = 2,906.32

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1.5x scale

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.