Home / 3,407.40-5,105.70-2,856.60

Finding the Fourth Proportional to 3,407.40, 5,105.70 and 2,856.60

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Solution

The fourth proportional to 3,407.40, 5,105.70 and 2,856.60 is: 4,280.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.40 : 5,105.70 = 2,856.60 : x
  2. Step 2: Convert to fraction form
    3,407.40/5,105.70 = 2,856.60/x
  3. Step 3: Cross multiply
    3,407.40x = 5,105.70 × 2,856.60
  4. Step 4: Simplify right side
    3,407.40x = 14,584,942.62
  5. Step 5: Solve for x
    x = 14,584,942.62/3,407.40
  6. Step 6: Final answer
    x = 4,280.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.