Home / 7,890.60-11,825.85-4,194.60

Finding the Fourth Proportional to 7,890.60, 11,825.85 and 4,194.60

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Solution

The fourth proportional to 7,890.60, 11,825.85 and 4,194.60 is: 6,286.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.60 : 11,825.85 = 4,194.60 : x
  2. Step 2: Convert to fraction form
    7,890.60/11,825.85 = 4,194.60/x
  3. Step 3: Cross multiply
    7,890.60x = 11,825.85 × 4,194.60
  4. Step 4: Simplify right side
    7,890.60x = 49,604,710.41
  5. Step 5: Solve for x
    x = 49,604,710.41/7,890.60
  6. Step 6: Final answer
    x = 6,286.56

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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.