Home / 8,811.07-13,216.62-2,971.78

Finding the Fourth Proportional to 8,811.07, 13,216.62 and 2,971.78

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Solution

The fourth proportional to 8,811.07, 13,216.62 and 2,971.78 is: 4,457.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.07 : 13,216.62 = 2,971.78 : x
  2. Step 2: Convert to fraction form
    8,811.07/13,216.62 = 2,971.78/x
  3. Step 3: Cross multiply
    8,811.07x = 13,216.62 × 2,971.78
  4. Step 4: Simplify right side
    8,811.07x = 39,276,820.90
  5. Step 5: Solve for x
    x = 39,276,820.90/8,811.07
  6. Step 6: Final answer
    x = 4,457.67

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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.