Home / 7,785.32-11,668.25-3,890.84

Finding the Fourth Proportional to 7,785.32, 11,668.25 and 3,890.84

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Solution

The fourth proportional to 7,785.32, 11,668.25 and 3,890.84 is: 5,831.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,785.32 : 11,668.25 = 3,890.84 : x
  2. Step 2: Convert to fraction form
    7,785.32/11,668.25 = 3,890.84/x
  3. Step 3: Cross multiply
    7,785.32x = 11,668.25 × 3,890.84
  4. Step 4: Simplify right side
    7,785.32x = 45,399,245.22
  5. Step 5: Solve for x
    x = 45,399,245.22/7,785.32
  6. Step 6: Final answer
    x = 5,831.39

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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.