Home / 4,094.20-6,139.80-1,321.60

Finding the Fourth Proportional to 4,094.20, 6,139.80 and 1,321.60

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Solution

The fourth proportional to 4,094.20, 6,139.80 and 1,321.60 is: 1,981.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,094.20 : 6,139.80 = 1,321.60 : x
  2. Step 2: Convert to fraction form
    4,094.20/6,139.80 = 1,321.60/x
  3. Step 3: Cross multiply
    4,094.20x = 6,139.80 × 1,321.60
  4. Step 4: Simplify right side
    4,094.20x = 8,114,359.68
  5. Step 5: Solve for x
    x = 8,114,359.68/4,094.20
  6. Step 6: Final answer
    x = 1,981.92

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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.