Home / 7,685.30-11,527.45-2,138.54

Finding the Fourth Proportional to 7,685.30, 11,527.45 and 2,138.54

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Solution

The fourth proportional to 7,685.30, 11,527.45 and 2,138.54 is: 3,207.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.30 : 11,527.45 = 2,138.54 : x
  2. Step 2: Convert to fraction form
    7,685.30/11,527.45 = 2,138.54/x
  3. Step 3: Cross multiply
    7,685.30x = 11,527.45 × 2,138.54
  4. Step 4: Simplify right side
    7,685.30x = 24,651,849.94
  5. Step 5: Solve for x
    x = 24,651,849.94/7,685.30
  6. Step 6: Final answer
    x = 3,207.66

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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.