Home / 3,907.40-5,391.96-2,228.99

Finding the Fourth Proportional to 3,907.40, 5,391.96 and 2,228.99

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Solution

The fourth proportional to 3,907.40, 5,391.96 and 2,228.99 is: 3,075.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.40 : 5,391.96 = 2,228.99 : x
  2. Step 2: Convert to fraction form
    3,907.40/5,391.96 = 2,228.99/x
  3. Step 3: Cross multiply
    3,907.40x = 5,391.96 × 2,228.99
  4. Step 4: Simplify right side
    3,907.40x = 12,018,624.92
  5. Step 5: Solve for x
    x = 12,018,624.92/3,907.40
  6. Step 6: Final answer
    x = 3,075.86

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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.