Home / 8,228.10-12,346.20-4,720.80

Finding the Fourth Proportional to 8,228.10, 12,346.20 and 4,720.80

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Solution

The fourth proportional to 8,228.10, 12,346.20 and 4,720.80 is: 7,083.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,228.10 : 12,346.20 = 4,720.80 : x
  2. Step 2: Convert to fraction form
    8,228.10/12,346.20 = 4,720.80/x
  3. Step 3: Cross multiply
    8,228.10x = 12,346.20 × 4,720.80
  4. Step 4: Simplify right side
    8,228.10x = 58,283,940.96
  5. Step 5: Solve for x
    x = 58,283,940.96/8,228.10
  6. Step 6: Final answer
    x = 7,083.52

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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.