Home / 3,076.09-4,245-1,678.84

Finding the Fourth Proportional to 3,076.09, 4,245 and 1,678.84

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Solution

The fourth proportional to 3,076.09, 4,245 and 1,678.84 is: 2,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.09 : 4,245 = 1,678.84 : x
  2. Step 2: Convert to fraction form
    3,076.09/4,245 = 1,678.84/x
  3. Step 3: Cross multiply
    3,076.09x = 4,245 × 1,678.84
  4. Step 4: Simplify right side
    3,076.09x = 7,126,675.80
  5. Step 5: Solve for x
    x = 7,126,675.80/3,076.09
  6. Step 6: Final answer
    x = 2,316.80

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1.5x scale

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.