Home / 3,076.45-4,245.48-1,679.20

Finding the Fourth Proportional to 3,076.45, 4,245.48 and 1,679.20

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Solution

The fourth proportional to 3,076.45, 4,245.48 and 1,679.20 is: 2,317.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.45 : 4,245.48 = 1,679.20 : x
  2. Step 2: Convert to fraction form
    3,076.45/4,245.48 = 1,679.20/x
  3. Step 3: Cross multiply
    3,076.45x = 4,245.48 × 1,679.20
  4. Step 4: Simplify right side
    3,076.45x = 7,129,010.02
  5. Step 5: Solve for x
    x = 7,129,010.02/3,076.45
  6. Step 6: Final answer
    x = 2,317.28

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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.