Home / 1,999.04-2,758.68-1,115.02

Finding the Fourth Proportional to 1,999.04, 2,758.68 and 1,115.02

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Solution

The fourth proportional to 1,999.04, 2,758.68 and 1,115.02 is: 1,538.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.04 : 2,758.68 = 1,115.02 : x
  2. Step 2: Convert to fraction form
    1,999.04/2,758.68 = 1,115.02/x
  3. Step 3: Cross multiply
    1,999.04x = 2,758.68 × 1,115.02
  4. Step 4: Simplify right side
    1,999.04x = 3,075,983.37
  5. Step 5: Solve for x
    x = 3,075,983.37/1,999.04
  6. Step 6: Final answer
    x = 1,538.73

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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.