Home / 8,621.92-12,931.47-3,074.44

Finding the Fourth Proportional to 8,621.92, 12,931.47 and 3,074.44

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Solution

The fourth proportional to 8,621.92, 12,931.47 and 3,074.44 is: 4,611.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.92 : 12,931.47 = 3,074.44 : x
  2. Step 2: Convert to fraction form
    8,621.92/12,931.47 = 3,074.44/x
  3. Step 3: Cross multiply
    8,621.92x = 12,931.47 × 3,074.44
  4. Step 4: Simplify right side
    8,621.92x = 39,757,028.63
  5. Step 5: Solve for x
    x = 39,757,028.63/8,621.92
  6. Step 6: Final answer
    x = 4,611.16

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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.