Home / 3,399.42-4,690.90-1,907.12

Finding the Fourth Proportional to 3,399.42, 4,690.90 and 1,907.12

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Solution

The fourth proportional to 3,399.42, 4,690.90 and 1,907.12 is: 2,631.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.42 : 4,690.90 = 1,907.12 : x
  2. Step 2: Convert to fraction form
    3,399.42/4,690.90 = 1,907.12/x
  3. Step 3: Cross multiply
    3,399.42x = 4,690.90 × 1,907.12
  4. Step 4: Simplify right side
    3,399.42x = 8,946,109.21
  5. Step 5: Solve for x
    x = 8,946,109.21/3,399.42
  6. Step 6: Final answer
    x = 2,631.66

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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.