Home / 10,627.20-15,940.80-3,231.60

Finding the Fourth Proportional to 10,627.20, 15,940.80 and 3,231.60

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Solution

The fourth proportional to 10,627.20, 15,940.80 and 3,231.60 is: 4,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,627.20 : 15,940.80 = 3,231.60 : x
  2. Step 2: Convert to fraction form
    10,627.20/15,940.80 = 3,231.60/x
  3. Step 3: Cross multiply
    10,627.20x = 15,940.80 × 3,231.60
  4. Step 4: Simplify right side
    10,627.20x = 51,514,289.28
  5. Step 5: Solve for x
    x = 51,514,289.28/10,627.20
  6. Step 6: Final answer
    x = 4,847.40

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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.