Home / 7,677.73-11,515.31-2,131.64

Finding the Fourth Proportional to 7,677.73, 11,515.31 and 2,131.64

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Solution

The fourth proportional to 7,677.73, 11,515.31 and 2,131.64 is: 3,197.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,677.73 : 11,515.31 = 2,131.64 : x
  2. Step 2: Convert to fraction form
    7,677.73/11,515.31 = 2,131.64/x
  3. Step 3: Cross multiply
    7,677.73x = 11,515.31 × 2,131.64
  4. Step 4: Simplify right side
    7,677.73x = 24,546,478.35
  5. Step 5: Solve for x
    x = 24,546,478.35/7,677.73
  6. Step 6: Final answer
    x = 3,197.10

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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.