Home / 7,777.09-11,650.20-3,611.35

Finding the Fourth Proportional to 7,777.09, 11,650.20 and 3,611.35

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Solution

The fourth proportional to 7,777.09, 11,650.20 and 3,611.35 is: 5,409.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.09 : 11,650.20 = 3,611.35 : x
  2. Step 2: Convert to fraction form
    7,777.09/11,650.20 = 3,611.35/x
  3. Step 3: Cross multiply
    7,777.09x = 11,650.20 × 3,611.35
  4. Step 4: Simplify right side
    7,777.09x = 42,072,949.77
  5. Step 5: Solve for x
    x = 42,072,949.77/7,777.09
  6. Step 6: Final answer
    x = 5,409.86

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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.