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Finding the Fourth Proportional to 8,636.99, 12,954.10 and 3,089.30

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Solution

The fourth proportional to 8,636.99, 12,954.10 and 3,089.30 is: 4,633.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.99 : 12,954.10 = 3,089.30 : x
  2. Step 2: Convert to fraction form
    8,636.99/12,954.10 = 3,089.30/x
  3. Step 3: Cross multiply
    8,636.99x = 12,954.10 × 3,089.30
  4. Step 4: Simplify right side
    8,636.99x = 40,019,101.13
  5. Step 5: Solve for x
    x = 40,019,101.13/8,636.99
  6. Step 6: Final answer
    x = 4,633.45

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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.