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Finding the Fourth Proportional to 8,941.28, 13,412.28 and 3,018.80

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Solution

The fourth proportional to 8,941.28, 13,412.28 and 3,018.80 is: 4,528.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,941.28 : 13,412.28 = 3,018.80 : x
  2. Step 2: Convert to fraction form
    8,941.28/13,412.28 = 3,018.80/x
  3. Step 3: Cross multiply
    8,941.28x = 13,412.28 × 3,018.80
  4. Step 4: Simplify right side
    8,941.28x = 40,488,990.86
  5. Step 5: Solve for x
    x = 40,488,990.86/8,941.28
  6. Step 6: Final answer
    x = 4,528.32

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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.