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Finding the Fourth Proportional to 7,684.79, 11,529 and 2,490.67

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Solution

The fourth proportional to 7,684.79, 11,529 and 2,490.67 is: 3,736.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,684.79 : 11,529 = 2,490.67 : x
  2. Step 2: Convert to fraction form
    7,684.79/11,529 = 2,490.67/x
  3. Step 3: Cross multiply
    7,684.79x = 11,529 × 2,490.67
  4. Step 4: Simplify right side
    7,684.79x = 28,714,934.43
  5. Step 5: Solve for x
    x = 28,714,934.43/7,684.79
  6. Step 6: Final answer
    x = 3,736.59

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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.