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Finding the Fourth Proportional to 8,644.99, 12,968.67 and 2,799.64

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Solution

The fourth proportional to 8,644.99, 12,968.67 and 2,799.64 is: 4,199.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,644.99 : 12,968.67 = 2,799.64 : x
  2. Step 2: Convert to fraction form
    8,644.99/12,968.67 = 2,799.64/x
  3. Step 3: Cross multiply
    8,644.99x = 12,968.67 × 2,799.64
  4. Step 4: Simplify right side
    8,644.99x = 36,307,607.28
  5. Step 5: Solve for x
    x = 36,307,607.28/8,644.99
  6. Step 6: Final answer
    x = 4,199.84

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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.