Home / 8,219.60-12,321.30-4,056.20

Finding the Fourth Proportional to 8,219.60, 12,321.30 and 4,056.20

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Solution

The fourth proportional to 8,219.60, 12,321.30 and 4,056.20 is: 6,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219.60 : 12,321.30 = 4,056.20 : x
  2. Step 2: Convert to fraction form
    8,219.60/12,321.30 = 4,056.20/x
  3. Step 3: Cross multiply
    8,219.60x = 12,321.30 × 4,056.20
  4. Step 4: Simplify right side
    8,219.60x = 49,977,657.06
  5. Step 5: Solve for x
    x = 49,977,657.06/8,219.60
  6. Step 6: Final answer
    x = 6,080.30

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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.