Home / 3,678.12-5,075.84-2,106.18

Finding the Fourth Proportional to 3,678.12, 5,075.84 and 2,106.18

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Solution

The fourth proportional to 3,678.12, 5,075.84 and 2,106.18 is: 2,906.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.12 : 5,075.84 = 2,106.18 : x
  2. Step 2: Convert to fraction form
    3,678.12/5,075.84 = 2,106.18/x
  3. Step 3: Cross multiply
    3,678.12x = 5,075.84 × 2,106.18
  4. Step 4: Simplify right side
    3,678.12x = 10,690,637.96
  5. Step 5: Solve for x
    x = 10,690,637.96/3,678.12
  6. Step 6: Final answer
    x = 2,906.55

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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.