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Finding the Fourth Proportional to 8,575.62, 12,851.79 and 3,639.07

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Solution

The fourth proportional to 8,575.62, 12,851.79 and 3,639.07 is: 5,453.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,575.62 : 12,851.79 = 3,639.07 : x
  2. Step 2: Convert to fraction form
    8,575.62/12,851.79 = 3,639.07/x
  3. Step 3: Cross multiply
    8,575.62x = 12,851.79 × 3,639.07
  4. Step 4: Simplify right side
    8,575.62x = 46,768,563.44
  5. Step 5: Solve for x
    x = 46,768,563.44/8,575.62
  6. Step 6: Final answer
    x = 5,453.67

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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.