Home / 8,109.80-12,162.30-3,176.60

Finding the Fourth Proportional to 8,109.80, 12,162.30 and 3,176.60

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Solution

The fourth proportional to 8,109.80, 12,162.30 and 3,176.60 is: 4,763.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.80 : 12,162.30 = 3,176.60 : x
  2. Step 2: Convert to fraction form
    8,109.80/12,162.30 = 3,176.60/x
  3. Step 3: Cross multiply
    8,109.80x = 12,162.30 × 3,176.60
  4. Step 4: Simplify right side
    8,109.80x = 38,634,762.18
  5. Step 5: Solve for x
    x = 38,634,762.18/8,109.80
  6. Step 6: Final answer
    x = 4,763.96

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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.