Home / 3,228.79-4,455.46-1,812.28

Finding the Fourth Proportional to 3,228.79, 4,455.46 and 1,812.28

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Solution

The fourth proportional to 3,228.79, 4,455.46 and 1,812.28 is: 2,500.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.79 : 4,455.46 = 1,812.28 : x
  2. Step 2: Convert to fraction form
    3,228.79/4,455.46 = 1,812.28/x
  3. Step 3: Cross multiply
    3,228.79x = 4,455.46 × 1,812.28
  4. Step 4: Simplify right side
    3,228.79x = 8,074,541.05
  5. Step 5: Solve for x
    x = 8,074,541.05/3,228.79
  6. Step 6: Final answer
    x = 2,500.79

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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.