Home / 8,409.08-12,619.48-3,478.76

Finding the Fourth Proportional to 8,409.08, 12,619.48 and 3,478.76

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Solution

The fourth proportional to 8,409.08, 12,619.48 and 3,478.76 is: 5,220.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,409.08 : 12,619.48 = 3,478.76 : x
  2. Step 2: Convert to fraction form
    8,409.08/12,619.48 = 3,478.76/x
  3. Step 3: Cross multiply
    8,409.08x = 12,619.48 × 3,478.76
  4. Step 4: Simplify right side
    8,409.08x = 43,900,142.24
  5. Step 5: Solve for x
    x = 43,900,142.24/8,409.08
  6. Step 6: Final answer
    x = 5,220.56

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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.