Home / 1,212.98-1,819.36-627.35

Finding the Fourth Proportional to 1,212.98, 1,819.36 and 627.35

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Solution

The fourth proportional to 1,212.98, 1,819.36 and 627.35 is: 940.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.98 : 1,819.36 = 627.35 : x
  2. Step 2: Convert to fraction form
    1,212.98/1,819.36 = 627.35/x
  3. Step 3: Cross multiply
    1,212.98x = 1,819.36 × 627.35
  4. Step 4: Simplify right side
    1,212.98x = 1,141,367.18
  5. Step 5: Solve for x
    x = 1,141,367.18/1,212.98
  6. Step 6: Final answer
    x = 940.97

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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.