Home / 3,392.45-4,680.96-1,900.40

Finding the Fourth Proportional to 3,392.45, 4,680.96 and 1,900.40

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Solution

The fourth proportional to 3,392.45, 4,680.96 and 1,900.40 is: 2,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.45 : 4,680.96 = 1,900.40 : x
  2. Step 2: Convert to fraction form
    3,392.45/4,680.96 = 1,900.40/x
  3. Step 3: Cross multiply
    3,392.45x = 4,680.96 × 1,900.40
  4. Step 4: Simplify right side
    3,392.45x = 8,895,665.85
  5. Step 5: Solve for x
    x = 8,895,665.85/3,392.45
  6. Step 6: Final answer
    x = 2,622.20

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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.