Home / 8,961.60-13,435.20-3,118.08

Finding the Fourth Proportional to 8,961.60, 13,435.20 and 3,118.08

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Solution

The fourth proportional to 8,961.60, 13,435.20 and 3,118.08 is: 4,674.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.60 : 13,435.20 = 3,118.08 : x
  2. Step 2: Convert to fraction form
    8,961.60/13,435.20 = 3,118.08/x
  3. Step 3: Cross multiply
    8,961.60x = 13,435.20 × 3,118.08
  4. Step 4: Simplify right side
    8,961.60x = 41,892,028.42
  5. Step 5: Solve for x
    x = 41,892,028.42/8,961.60
  6. Step 6: Final answer
    x = 4,674.61

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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.