Home / 3,120.96-4,299.40-2,671.40

Finding the Fourth Proportional to 3,120.96, 4,299.40 and 2,671.40

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Solution

The fourth proportional to 3,120.96, 4,299.40 and 2,671.40 is: 3,680.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.96 : 4,299.40 = 2,671.40 : x
  2. Step 2: Convert to fraction form
    3,120.96/4,299.40 = 2,671.40/x
  3. Step 3: Cross multiply
    3,120.96x = 4,299.40 × 2,671.40
  4. Step 4: Simplify right side
    3,120.96x = 11,485,388.98
  5. Step 5: Solve for x
    x = 11,485,388.98/3,120.96
  6. Step 6: Final answer
    x = 3,680.08

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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.