Home / 3,996.95-5,515.79-2,228.51

Finding the Fourth Proportional to 3,996.95, 5,515.79 and 2,228.51

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Solution

The fourth proportional to 3,996.95, 5,515.79 and 2,228.51 is: 3,075.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.95 : 5,515.79 = 2,228.51 : x
  2. Step 2: Convert to fraction form
    3,996.95/5,515.79 = 2,228.51/x
  3. Step 3: Cross multiply
    3,996.95x = 5,515.79 × 2,228.51
  4. Step 4: Simplify right side
    3,996.95x = 12,291,954.45
  5. Step 5: Solve for x
    x = 12,291,954.45/3,996.95
  6. Step 6: Final answer
    x = 3,075.34

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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.