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Finding the Fourth Proportional to 8,672.08, 13,004.70 and 4,719.28

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Solution

The fourth proportional to 8,672.08, 13,004.70 and 4,719.28 is: 7,077.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.08 : 13,004.70 = 4,719.28 : x
  2. Step 2: Convert to fraction form
    8,672.08/13,004.70 = 4,719.28/x
  3. Step 3: Cross multiply
    8,672.08x = 13,004.70 × 4,719.28
  4. Step 4: Simplify right side
    8,672.08x = 61,372,820.62
  5. Step 5: Solve for x
    x = 61,372,820.62/8,672.08
  6. Step 6: Final answer
    x = 7,077.06

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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.