Home / 8,179.86-12,267.36-2,986.14

Finding the Fourth Proportional to 8,179.86, 12,267.36 and 2,986.14

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Solution

The fourth proportional to 8,179.86, 12,267.36 and 2,986.14 is: 4,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179.86 : 12,267.36 = 2,986.14 : x
  2. Step 2: Convert to fraction form
    8,179.86/12,267.36 = 2,986.14/x
  3. Step 3: Cross multiply
    8,179.86x = 12,267.36 × 2,986.14
  4. Step 4: Simplify right side
    8,179.86x = 36,632,054.39
  5. Step 5: Solve for x
    x = 36,632,054.39/8,179.86
  6. Step 6: Final answer
    x = 4,478.32

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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.