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Finding the Fourth Proportional to 8,992.58, 13,478.79 and 6,491.30

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Solution

The fourth proportional to 8,992.58, 13,478.79 and 6,491.30 is: 9,729.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.58 : 13,478.79 = 6,491.30 : x
  2. Step 2: Convert to fraction form
    8,992.58/13,478.79 = 6,491.30/x
  3. Step 3: Cross multiply
    8,992.58x = 13,478.79 × 6,491.30
  4. Step 4: Simplify right side
    8,992.58x = 87,494,869.53
  5. Step 5: Solve for x
    x = 87,494,869.53/8,992.58
  6. Step 6: Final answer
    x = 9,729.67

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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.