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Finding the Fourth Proportional to 8,355.68, 12,526.16 and 3,158.88

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Solution

The fourth proportional to 8,355.68, 12,526.16 and 3,158.88 is: 4,735.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,355.68 : 12,526.16 = 3,158.88 : x
  2. Step 2: Convert to fraction form
    8,355.68/12,526.16 = 3,158.88/x
  3. Step 3: Cross multiply
    8,355.68x = 12,526.16 × 3,158.88
  4. Step 4: Simplify right side
    8,355.68x = 39,568,636.30
  5. Step 5: Solve for x
    x = 39,568,636.30/8,355.68
  6. Step 6: Final answer
    x = 4,735.54

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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.