Home / 8,234.20-12,351.30-7,888.60

Finding the Fourth Proportional to 8,234.20, 12,351.30 and 7,888.60

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Solution

The fourth proportional to 8,234.20, 12,351.30 and 7,888.60 is: 11,832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,234.20 : 12,351.30 = 7,888.60 : x
  2. Step 2: Convert to fraction form
    8,234.20/12,351.30 = 7,888.60/x
  3. Step 3: Cross multiply
    8,234.20x = 12,351.30 × 7,888.60
  4. Step 4: Simplify right side
    8,234.20x = 97,434,465.18
  5. Step 5: Solve for x
    x = 97,434,465.18/8,234.20
  6. Step 6: Final answer
    x = 11,832.90

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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.