Home / 3,678.11-5,075.29-2,185.48

Finding the Fourth Proportional to 3,678.11, 5,075.29 and 2,185.48

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Solution

The fourth proportional to 3,678.11, 5,075.29 and 2,185.48 is: 3,015.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.11 : 5,075.29 = 2,185.48 : x
  2. Step 2: Convert to fraction form
    3,678.11/5,075.29 = 2,185.48/x
  3. Step 3: Cross multiply
    3,678.11x = 5,075.29 × 2,185.48
  4. Step 4: Simplify right side
    3,678.11x = 11,091,933.86
  5. Step 5: Solve for x
    x = 11,091,933.86/3,678.11
  6. Step 6: Final answer
    x = 3,015.66

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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.