Home / 1,481.78-2,220.70-1,153.12

Finding the Fourth Proportional to 1,481.78, 2,220.70 and 1,153.12

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Solution

The fourth proportional to 1,481.78, 2,220.70 and 1,153.12 is: 1,728.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.78 : 2,220.70 = 1,153.12 : x
  2. Step 2: Convert to fraction form
    1,481.78/2,220.70 = 1,153.12/x
  3. Step 3: Cross multiply
    1,481.78x = 2,220.70 × 1,153.12
  4. Step 4: Simplify right side
    1,481.78x = 2,560,733.58
  5. Step 5: Solve for x
    x = 2,560,733.58/1,481.78
  6. Step 6: Final answer
    x = 1,728.15

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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.