Home / 8,621.70-12,932.69-2,778.34

Finding the Fourth Proportional to 8,621.70, 12,932.69 and 2,778.34

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Solution

The fourth proportional to 8,621.70, 12,932.69 and 2,778.34 is: 4,167.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.70 : 12,932.69 = 2,778.34 : x
  2. Step 2: Convert to fraction form
    8,621.70/12,932.69 = 2,778.34/x
  3. Step 3: Cross multiply
    8,621.70x = 12,932.69 × 2,778.34
  4. Step 4: Simplify right side
    8,621.70x = 35,931,409.93
  5. Step 5: Solve for x
    x = 35,931,409.93/8,621.70
  6. Step 6: Final answer
    x = 4,167.56

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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.