Home / 2,223.56-3,068.44-1,228.78

Finding the Fourth Proportional to 2,223.56, 3,068.44 and 1,228.78

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Solution

The fourth proportional to 2,223.56, 3,068.44 and 1,228.78 is: 1,695.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.56 : 3,068.44 = 1,228.78 : x
  2. Step 2: Convert to fraction form
    2,223.56/3,068.44 = 1,228.78/x
  3. Step 3: Cross multiply
    2,223.56x = 3,068.44 × 1,228.78
  4. Step 4: Simplify right side
    2,223.56x = 3,770,437.70
  5. Step 5: Solve for x
    x = 3,770,437.70/2,223.56
  6. Step 6: Final answer
    x = 1,695.68

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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.