Home / 7,783.85-11,679.15-4,085.19

Finding the Fourth Proportional to 7,783.85, 11,679.15 and 4,085.19

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Solution

The fourth proportional to 7,783.85, 11,679.15 and 4,085.19 is: 6,129.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,783.85 : 11,679.15 = 4,085.19 : x
  2. Step 2: Convert to fraction form
    7,783.85/11,679.15 = 4,085.19/x
  3. Step 3: Cross multiply
    7,783.85x = 11,679.15 × 4,085.19
  4. Step 4: Simplify right side
    7,783.85x = 47,711,546.79
  5. Step 5: Solve for x
    x = 47,711,546.79/7,783.85
  6. Step 6: Final answer
    x = 6,129.56

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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.