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Finding the Fourth Proportional to 6,435.88, 8,923.15 and 6,219.88

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Solution

The fourth proportional to 6,435.88, 8,923.15 and 6,219.88 is: 8,623.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,435.88 : 8,923.15 = 6,219.88 : x
  2. Step 2: Convert to fraction form
    6,435.88/8,923.15 = 6,219.88/x
  3. Step 3: Cross multiply
    6,435.88x = 8,923.15 × 6,219.88
  4. Step 4: Simplify right side
    6,435.88x = 55,500,922.22
  5. Step 5: Solve for x
    x = 55,500,922.22/6,435.88
  6. Step 6: Final answer
    x = 8,623.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.