Home / 7,679.54-11,518.90-3,782.63

Finding the Fourth Proportional to 7,679.54, 11,518.90 and 3,782.63

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Solution

The fourth proportional to 7,679.54, 11,518.90 and 3,782.63 is: 5,673.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.54 : 11,518.90 = 3,782.63 : x
  2. Step 2: Convert to fraction form
    7,679.54/11,518.90 = 3,782.63/x
  3. Step 3: Cross multiply
    7,679.54x = 11,518.90 × 3,782.63
  4. Step 4: Simplify right side
    7,679.54x = 43,571,669.66
  5. Step 5: Solve for x
    x = 43,571,669.66/7,679.54
  6. Step 6: Final answer
    x = 5,673.74

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1.5x scale

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.