Home / 2,219.72-3,063.19-1,225

Finding the Fourth Proportional to 2,219.72, 3,063.19 and 1,225

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Solution

The fourth proportional to 2,219.72, 3,063.19 and 1,225 is: 1,690.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.72 : 3,063.19 = 1,225 : x
  2. Step 2: Convert to fraction form
    2,219.72/3,063.19 = 1,225/x
  3. Step 3: Cross multiply
    2,219.72x = 3,063.19 × 1,225
  4. Step 4: Simplify right side
    2,219.72x = 3,752,407.75
  5. Step 5: Solve for x
    x = 3,752,407.75/2,219.72
  6. Step 6: Final answer
    x = 1,690.49

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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.