Home / 1,621.30-2,236.54-1,227.64

Finding the Fourth Proportional to 1,621.30, 2,236.54 and 1,227.64

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Solution

The fourth proportional to 1,621.30, 2,236.54 and 1,227.64 is: 1,693.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.30 : 2,236.54 = 1,227.64 : x
  2. Step 2: Convert to fraction form
    1,621.30/2,236.54 = 1,227.64/x
  3. Step 3: Cross multiply
    1,621.30x = 2,236.54 × 1,227.64
  4. Step 4: Simplify right side
    1,621.30x = 2,745,665.97
  5. Step 5: Solve for x
    x = 2,745,665.97/1,621.30
  6. Step 6: Final answer
    x = 1,693.50

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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.