Home / 3,399.32-4,690.99-1,907.21

Finding the Fourth Proportional to 3,399.32, 4,690.99 and 1,907.21

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Solution

The fourth proportional to 3,399.32, 4,690.99 and 1,907.21 is: 2,631.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.32 : 4,690.99 = 1,907.21 : x
  2. Step 2: Convert to fraction form
    3,399.32/4,690.99 = 1,907.21/x
  3. Step 3: Cross multiply
    3,399.32x = 4,690.99 × 1,907.21
  4. Step 4: Simplify right side
    3,399.32x = 8,946,674.81
  5. Step 5: Solve for x
    x = 8,946,674.81/3,399.32
  6. Step 6: Final answer
    x = 2,631.90

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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.