Home / 3,678.18-5,075.82-1,999.62

Finding the Fourth Proportional to 3,678.18, 5,075.82 and 1,999.62

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Solution

The fourth proportional to 3,678.18, 5,075.82 and 1,999.62 is: 2,759.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.18 : 5,075.82 = 1,999.62 : x
  2. Step 2: Convert to fraction form
    3,678.18/5,075.82 = 1,999.62/x
  3. Step 3: Cross multiply
    3,678.18x = 5,075.82 × 1,999.62
  4. Step 4: Simplify right side
    3,678.18x = 10,149,711.19
  5. Step 5: Solve for x
    x = 10,149,711.19/3,678.18
  6. Step 6: Final answer
    x = 2,759.44

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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.