Home / 3,119.20-4,676.10-1,885.30

Finding the Fourth Proportional to 3,119.20, 4,676.10 and 1,885.30

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Solution

The fourth proportional to 3,119.20, 4,676.10 and 1,885.30 is: 2,826.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.20 : 4,676.10 = 1,885.30 : x
  2. Step 2: Convert to fraction form
    3,119.20/4,676.10 = 1,885.30/x
  3. Step 3: Cross multiply
    3,119.20x = 4,676.10 × 1,885.30
  4. Step 4: Simplify right side
    3,119.20x = 8,815,851.33
  5. Step 5: Solve for x
    x = 8,815,851.33/3,119.20
  6. Step 6: Final answer
    x = 2,826.32

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1.5x scale

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.