Home / 8,621.76-12,933.28-2,782.56

Finding the Fourth Proportional to 8,621.76, 12,933.28 and 2,782.56

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Solution

The fourth proportional to 8,621.76, 12,933.28 and 2,782.56 is: 4,174.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.76 : 12,933.28 = 2,782.56 : x
  2. Step 2: Convert to fraction form
    8,621.76/12,933.28 = 2,782.56/x
  3. Step 3: Cross multiply
    8,621.76x = 12,933.28 × 2,782.56
  4. Step 4: Simplify right side
    8,621.76x = 35,987,627.60
  5. Step 5: Solve for x
    x = 35,987,627.60/8,621.76
  6. Step 6: Final answer
    x = 4,174.05

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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.