Home / 3,076.50-4,245.60-1,679.28

Finding the Fourth Proportional to 3,076.50, 4,245.60 and 1,679.28

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Solution

The fourth proportional to 3,076.50, 4,245.60 and 1,679.28 is: 2,317.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.50 : 4,245.60 = 1,679.28 : x
  2. Step 2: Convert to fraction form
    3,076.50/4,245.60 = 1,679.28/x
  3. Step 3: Cross multiply
    3,076.50x = 4,245.60 × 1,679.28
  4. Step 4: Simplify right side
    3,076.50x = 7,129,551.17
  5. Step 5: Solve for x
    x = 7,129,551.17/3,076.50
  6. Step 6: Final answer
    x = 2,317.42

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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.