Home / 8,458.21-12,690.32-3,777.79

Finding the Fourth Proportional to 8,458.21, 12,690.32 and 3,777.79

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Solution

The fourth proportional to 8,458.21, 12,690.32 and 3,777.79 is: 5,668.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.21 : 12,690.32 = 3,777.79 : x
  2. Step 2: Convert to fraction form
    8,458.21/12,690.32 = 3,777.79/x
  3. Step 3: Cross multiply
    8,458.21x = 12,690.32 × 3,777.79
  4. Step 4: Simplify right side
    8,458.21x = 47,941,363.99
  5. Step 5: Solve for x
    x = 47,941,363.99/8,458.21
  6. Step 6: Final answer
    x = 5,668.03

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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.