Home / 4,079.60-6,119.40-2,111.30

Finding the Fourth Proportional to 4,079.60, 6,119.40 and 2,111.30

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Solution

The fourth proportional to 4,079.60, 6,119.40 and 2,111.30 is: 3,166.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.60 : 6,119.40 = 2,111.30 : x
  2. Step 2: Convert to fraction form
    4,079.60/6,119.40 = 2,111.30/x
  3. Step 3: Cross multiply
    4,079.60x = 6,119.40 × 2,111.30
  4. Step 4: Simplify right side
    4,079.60x = 12,919,889.22
  5. Step 5: Solve for x
    x = 12,919,889.22/4,079.60
  6. Step 6: Final answer
    x = 3,166.95

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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.