Home / 2,812.68-3,887.46-2,028.60

Finding the Fourth Proportional to 2,812.68, 3,887.46 and 2,028.60

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Solution

The fourth proportional to 2,812.68, 3,887.46 and 2,028.60 is: 2,803.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.68 : 3,887.46 = 2,028.60 : x
  2. Step 2: Convert to fraction form
    2,812.68/3,887.46 = 2,028.60/x
  3. Step 3: Cross multiply
    2,812.68x = 3,887.46 × 2,028.60
  4. Step 4: Simplify right side
    2,812.68x = 7,886,101.36
  5. Step 5: Solve for x
    x = 7,886,101.36/2,812.68
  6. Step 6: Final answer
    x = 2,803.77

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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.