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Finding the Fourth Proportional to 8,752.44, 13,128.64 and 2,178.63

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Solution

The fourth proportional to 8,752.44, 13,128.64 and 2,178.63 is: 3,267.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,752.44 : 13,128.64 = 2,178.63 : x
  2. Step 2: Convert to fraction form
    8,752.44/13,128.64 = 2,178.63/x
  3. Step 3: Cross multiply
    8,752.44x = 13,128.64 × 2,178.63
  4. Step 4: Simplify right side
    8,752.44x = 28,602,372.43
  5. Step 5: Solve for x
    x = 28,602,372.43/8,752.44
  6. Step 6: Final answer
    x = 3,267.93

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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.