Home / 3,721.05-5,135.21-2,228.67

Finding the Fourth Proportional to 3,721.05, 5,135.21 and 2,228.67

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Solution

The fourth proportional to 3,721.05, 5,135.21 and 2,228.67 is: 3,075.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.05 : 5,135.21 = 2,228.67 : x
  2. Step 2: Convert to fraction form
    3,721.05/5,135.21 = 2,228.67/x
  3. Step 3: Cross multiply
    3,721.05x = 5,135.21 × 2,228.67
  4. Step 4: Simplify right side
    3,721.05x = 11,444,677.33
  5. Step 5: Solve for x
    x = 11,444,677.33/3,721.05
  6. Step 6: Final answer
    x = 3,075.66

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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.