Home / 3,072.60-4,608.86-1,124.78

Finding the Fourth Proportional to 3,072.60, 4,608.86 and 1,124.78

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Solution

The fourth proportional to 3,072.60, 4,608.86 and 1,124.78 is: 1,687.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.60 : 4,608.86 = 1,124.78 : x
  2. Step 2: Convert to fraction form
    3,072.60/4,608.86 = 1,124.78/x
  3. Step 3: Cross multiply
    3,072.60x = 4,608.86 × 1,124.78
  4. Step 4: Simplify right side
    3,072.60x = 5,183,953.55
  5. Step 5: Solve for x
    x = 5,183,953.55/3,072.60
  6. Step 6: Final answer
    x = 1,687.16

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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.