Home / 7,677.76-11,516.63-2,131.11

Finding the Fourth Proportional to 7,677.76, 11,516.63 and 2,131.11

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Solution

The fourth proportional to 7,677.76, 11,516.63 and 2,131.11 is: 3,196.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,677.76 : 11,516.63 = 2,131.11 : x
  2. Step 2: Convert to fraction form
    7,677.76/11,516.63 = 2,131.11/x
  3. Step 3: Cross multiply
    7,677.76x = 11,516.63 × 2,131.11
  4. Step 4: Simplify right side
    7,677.76x = 24,543,147.78
  5. Step 5: Solve for x
    x = 24,543,147.78/7,677.76
  6. Step 6: Final answer
    x = 3,196.65

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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.