Home / 1,222.54-1,698.48-1,207.96

Finding the Fourth Proportional to 1,222.54, 1,698.48 and 1,207.96

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Solution

The fourth proportional to 1,222.54, 1,698.48 and 1,207.96 is: 1,678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222.54 : 1,698.48 = 1,207.96 : x
  2. Step 2: Convert to fraction form
    1,222.54/1,698.48 = 1,207.96/x
  3. Step 3: Cross multiply
    1,222.54x = 1,698.48 × 1,207.96
  4. Step 4: Simplify right side
    1,222.54x = 2,051,695.90
  5. Step 5: Solve for x
    x = 2,051,695.90/1,222.54
  6. Step 6: Final answer
    x = 1,678.22

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.