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Finding the Fourth Proportional to 8,674.62, 12,990.95 and 4,965.60

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Solution

The fourth proportional to 8,674.62, 12,990.95 and 4,965.60 is: 7,436.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.62 : 12,990.95 = 4,965.60 : x
  2. Step 2: Convert to fraction form
    8,674.62/12,990.95 = 4,965.60/x
  3. Step 3: Cross multiply
    8,674.62x = 12,990.95 × 4,965.60
  4. Step 4: Simplify right side
    8,674.62x = 64,507,861.32
  5. Step 5: Solve for x
    x = 64,507,861.32/8,674.62
  6. Step 6: Final answer
    x = 7,436.39

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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.