Home / 2,227.06-3,340.23-840.28

Finding the Fourth Proportional to 2,227.06, 3,340.23 and 840.28

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Solution

The fourth proportional to 2,227.06, 3,340.23 and 840.28 is: 1,260.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,227.06 : 3,340.23 = 840.28 : x
  2. Step 2: Convert to fraction form
    2,227.06/3,340.23 = 840.28/x
  3. Step 3: Cross multiply
    2,227.06x = 3,340.23 × 840.28
  4. Step 4: Simplify right side
    2,227.06x = 2,806,728.46
  5. Step 5: Solve for x
    x = 2,806,728.46/2,227.06
  6. Step 6: Final answer
    x = 1,260.28

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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.