Home / 7,739.25-10,670.19-6,321.45

Finding the Fourth Proportional to 7,739.25, 10,670.19 and 6,321.45

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Solution

The fourth proportional to 7,739.25, 10,670.19 and 6,321.45 is: 8,715.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,739.25 : 10,670.19 = 6,321.45 : x
  2. Step 2: Convert to fraction form
    7,739.25/10,670.19 = 6,321.45/x
  3. Step 3: Cross multiply
    7,739.25x = 10,670.19 × 6,321.45
  4. Step 4: Simplify right side
    7,739.25x = 67,451,072.58
  5. Step 5: Solve for x
    x = 67,451,072.58/7,739.25
  6. Step 6: Final answer
    x = 8,715.45

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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.