Home / 8,132.72-12,199.32-2,938.64

Finding the Fourth Proportional to 8,132.72, 12,199.32 and 2,938.64

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Solution

The fourth proportional to 8,132.72, 12,199.32 and 2,938.64 is: 4,408.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,132.72 : 12,199.32 = 2,938.64 : x
  2. Step 2: Convert to fraction form
    8,132.72/12,199.32 = 2,938.64/x
  3. Step 3: Cross multiply
    8,132.72x = 12,199.32 × 2,938.64
  4. Step 4: Simplify right side
    8,132.72x = 35,849,409.72
  5. Step 5: Solve for x
    x = 35,849,409.72/8,132.72
  6. Step 6: Final answer
    x = 4,408.05

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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.