Home / 3,678.13-5,075.62-1,999.53

Finding the Fourth Proportional to 3,678.13, 5,075.62 and 1,999.53

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Solution

The fourth proportional to 3,678.13, 5,075.62 and 1,999.53 is: 2,759.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.13 : 5,075.62 = 1,999.53 : x
  2. Step 2: Convert to fraction form
    3,678.13/5,075.62 = 1,999.53/x
  3. Step 3: Cross multiply
    3,678.13x = 5,075.62 × 1,999.53
  4. Step 4: Simplify right side
    3,678.13x = 10,148,819.08
  5. Step 5: Solve for x
    x = 10,148,819.08/3,678.13
  6. Step 6: Final answer
    x = 2,759.23

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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.