Home / 7,778.36-11,669.60-4,079.57

Finding the Fourth Proportional to 7,778.36, 11,669.60 and 4,079.57

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Solution

The fourth proportional to 7,778.36, 11,669.60 and 4,079.57 is: 6,120.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.36 : 11,669.60 = 4,079.57 : x
  2. Step 2: Convert to fraction form
    7,778.36/11,669.60 = 4,079.57/x
  3. Step 3: Cross multiply
    7,778.36x = 11,669.60 × 4,079.57
  4. Step 4: Simplify right side
    7,778.36x = 47,606,901.92
  5. Step 5: Solve for x
    x = 47,606,901.92/7,778.36
  6. Step 6: Final answer
    x = 6,120.43

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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.