Home / 3,788.46-5,686.74-2,148.21

Finding the Fourth Proportional to 3,788.46, 5,686.74 and 2,148.21

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Solution

The fourth proportional to 3,788.46, 5,686.74 and 2,148.21 is: 3,224.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.46 : 5,686.74 = 2,148.21 : x
  2. Step 2: Convert to fraction form
    3,788.46/5,686.74 = 2,148.21/x
  3. Step 3: Cross multiply
    3,788.46x = 5,686.74 × 2,148.21
  4. Step 4: Simplify right side
    3,788.46x = 12,216,311.74
  5. Step 5: Solve for x
    x = 12,216,311.74/3,788.46
  6. Step 6: Final answer
    x = 3,224.61

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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.