Home / 7,739.37-10,688.42-6,399.83

Finding the Fourth Proportional to 7,739.37, 10,688.42 and 6,399.83

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Solution

The fourth proportional to 7,739.37, 10,688.42 and 6,399.83 is: 8,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739.37 : 10,688.42 = 6,399.83 : x
  2. Step 2: Convert to fraction form
    7,739.37/10,688.42 = 6,399.83/x
  3. Step 3: Cross multiply
    7,739.37x = 10,688.42 × 6,399.83
  4. Step 4: Simplify right side
    7,739.37x = 68,404,113.69
  5. Step 5: Solve for x
    x = 68,404,113.69/7,739.37
  6. Step 6: Final answer
    x = 8,838.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.