Home / 7,685.11-11,527.70-2,138.50

Finding the Fourth Proportional to 7,685.11, 11,527.70 and 2,138.50

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Solution

The fourth proportional to 7,685.11, 11,527.70 and 2,138.50 is: 3,207.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.11 : 11,527.70 = 2,138.50 : x
  2. Step 2: Convert to fraction form
    7,685.11/11,527.70 = 2,138.50/x
  3. Step 3: Cross multiply
    7,685.11x = 11,527.70 × 2,138.50
  4. Step 4: Simplify right side
    7,685.11x = 24,651,986.45
  5. Step 5: Solve for x
    x = 24,651,986.45/7,685.11
  6. Step 6: Final answer
    x = 3,207.76

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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.