Home / 8,419.90-12,630.21-2,873.02

Finding the Fourth Proportional to 8,419.90, 12,630.21 and 2,873.02

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Solution

The fourth proportional to 8,419.90, 12,630.21 and 2,873.02 is: 4,309.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.90 : 12,630.21 = 2,873.02 : x
  2. Step 2: Convert to fraction form
    8,419.90/12,630.21 = 2,873.02/x
  3. Step 3: Cross multiply
    8,419.90x = 12,630.21 × 2,873.02
  4. Step 4: Simplify right side
    8,419.90x = 36,286,845.93
  5. Step 5: Solve for x
    x = 36,286,845.93/8,419.90
  6. Step 6: Final answer
    x = 4,309.65

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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.