Home / 8,619.96-12,929.82-2,776.60

Finding the Fourth Proportional to 8,619.96, 12,929.82 and 2,776.60

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Solution

The fourth proportional to 8,619.96, 12,929.82 and 2,776.60 is: 4,164.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.96 : 12,929.82 = 2,776.60 : x
  2. Step 2: Convert to fraction form
    8,619.96/12,929.82 = 2,776.60/x
  3. Step 3: Cross multiply
    8,619.96x = 12,929.82 × 2,776.60
  4. Step 4: Simplify right side
    8,619.96x = 35,900,938.21
  5. Step 5: Solve for x
    x = 35,900,938.21/8,619.96
  6. Step 6: Final answer
    x = 4,164.86

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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.