Home / 8,619.47-12,903.69-5,321.96

Finding the Fourth Proportional to 8,619.47, 12,903.69 and 5,321.96

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Solution

The fourth proportional to 8,619.47, 12,903.69 and 5,321.96 is: 7,967.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.47 : 12,903.69 = 5,321.96 : x
  2. Step 2: Convert to fraction form
    8,619.47/12,903.69 = 5,321.96/x
  3. Step 3: Cross multiply
    8,619.47x = 12,903.69 × 5,321.96
  4. Step 4: Simplify right side
    8,619.47x = 68,672,922.03
  5. Step 5: Solve for x
    x = 68,672,922.03/8,619.47
  6. Step 6: Final answer
    x = 7,967.19

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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.