Home / 8,117.20-12,162.60-7,339.60

Finding the Fourth Proportional to 8,117.20, 12,162.60 and 7,339.60

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Solution

The fourth proportional to 8,117.20, 12,162.60 and 7,339.60 is: 10,997.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.20 : 12,162.60 = 7,339.60 : x
  2. Step 2: Convert to fraction form
    8,117.20/12,162.60 = 7,339.60/x
  3. Step 3: Cross multiply
    8,117.20x = 12,162.60 × 7,339.60
  4. Step 4: Simplify right side
    8,117.20x = 89,268,618.96
  5. Step 5: Solve for x
    x = 89,268,618.96/8,117.20
  6. Step 6: Final answer
    x = 10,997.46

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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.