Home / 8,729.21-13,094.07-2,155.39

Finding the Fourth Proportional to 8,729.21, 13,094.07 and 2,155.39

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Solution

The fourth proportional to 8,729.21, 13,094.07 and 2,155.39 is: 3,233.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,729.21 : 13,094.07 = 2,155.39 : x
  2. Step 2: Convert to fraction form
    8,729.21/13,094.07 = 2,155.39/x
  3. Step 3: Cross multiply
    8,729.21x = 13,094.07 × 2,155.39
  4. Step 4: Simplify right side
    8,729.21x = 28,222,794.80
  5. Step 5: Solve for x
    x = 28,222,794.80/8,729.21
  6. Step 6: Final answer
    x = 3,233.15

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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.