Home / 7,678.96-11,531.28-6,713.44

Finding the Fourth Proportional to 7,678.96, 11,531.28 and 6,713.44

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Solution

The fourth proportional to 7,678.96, 11,531.28 and 6,713.44 is: 10,081.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.96 : 11,531.28 = 6,713.44 : x
  2. Step 2: Convert to fraction form
    7,678.96/11,531.28 = 6,713.44/x
  3. Step 3: Cross multiply
    7,678.96x = 11,531.28 × 6,713.44
  4. Step 4: Simplify right side
    7,678.96x = 77,414,556.40
  5. Step 5: Solve for x
    x = 77,414,556.40/7,678.96
  6. Step 6: Final answer
    x = 10,081.39

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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.