Home / 3,076.40-4,245.75-1,817.86

Finding the Fourth Proportional to 3,076.40, 4,245.75 and 1,817.86

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Solution

The fourth proportional to 3,076.40, 4,245.75 and 1,817.86 is: 2,508.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.40 : 4,245.75 = 1,817.86 : x
  2. Step 2: Convert to fraction form
    3,076.40/4,245.75 = 1,817.86/x
  3. Step 3: Cross multiply
    3,076.40x = 4,245.75 × 1,817.86
  4. Step 4: Simplify right side
    3,076.40x = 7,718,179.10
  5. Step 5: Solve for x
    x = 7,718,179.10/3,076.40
  6. Step 6: Final answer
    x = 2,508.83

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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.