Home / 3,399.21-4,690.94-1,907.15

Finding the Fourth Proportional to 3,399.21, 4,690.94 and 1,907.15

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Solution

The fourth proportional to 3,399.21, 4,690.94 and 1,907.15 is: 2,631.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.21 : 4,690.94 = 1,907.15 : x
  2. Step 2: Convert to fraction form
    3,399.21/4,690.94 = 1,907.15/x
  3. Step 3: Cross multiply
    3,399.21x = 4,690.94 × 1,907.15
  4. Step 4: Simplify right side
    3,399.21x = 8,946,293.23
  5. Step 5: Solve for x
    x = 8,946,293.23/3,399.21
  6. Step 6: Final answer
    x = 2,631.87

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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.