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Finding the Fourth Proportional to 8,811.21, 13,212.87 and 6,335.67

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Solution

The fourth proportional to 8,811.21, 13,212.87 and 6,335.67 is: 9,500.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.21 : 13,212.87 = 6,335.67 : x
  2. Step 2: Convert to fraction form
    8,811.21/13,212.87 = 6,335.67/x
  3. Step 3: Cross multiply
    8,811.21x = 13,212.87 × 6,335.67
  4. Step 4: Simplify right side
    8,811.21x = 83,712,384.07
  5. Step 5: Solve for x
    x = 83,712,384.07/8,811.21
  6. Step 6: Final answer
    x = 9,500.67

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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.