Home / 2,856.05-4,283.32-1,211.75

Finding the Fourth Proportional to 2,856.05, 4,283.32 and 1,211.75

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Solution

The fourth proportional to 2,856.05, 4,283.32 and 1,211.75 is: 1,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.05 : 4,283.32 = 1,211.75 : x
  2. Step 2: Convert to fraction form
    2,856.05/4,283.32 = 1,211.75/x
  3. Step 3: Cross multiply
    2,856.05x = 4,283.32 × 1,211.75
  4. Step 4: Simplify right side
    2,856.05x = 5,190,313.01
  5. Step 5: Solve for x
    x = 5,190,313.01/2,856.05
  6. Step 6: Final answer
    x = 1,817.30

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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.