Home / 8,680.47-13,021.31-4,296.75

Finding the Fourth Proportional to 8,680.47, 13,021.31 and 4,296.75

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Solution

The fourth proportional to 8,680.47, 13,021.31 and 4,296.75 is: 6,445.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.47 : 13,021.31 = 4,296.75 : x
  2. Step 2: Convert to fraction form
    8,680.47/13,021.31 = 4,296.75/x
  3. Step 3: Cross multiply
    8,680.47x = 13,021.31 × 4,296.75
  4. Step 4: Simplify right side
    8,680.47x = 55,949,324.48
  5. Step 5: Solve for x
    x = 55,949,324.48/8,680.47
  6. Step 6: Final answer
    x = 6,445.43

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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.