Home / 7,678.86-11,518.23-2,132.28

Finding the Fourth Proportional to 7,678.86, 11,518.23 and 2,132.28

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Solution

The fourth proportional to 7,678.86, 11,518.23 and 2,132.28 is: 3,198.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.86 : 11,518.23 = 2,132.28 : x
  2. Step 2: Convert to fraction form
    7,678.86/11,518.23 = 2,132.28/x
  3. Step 3: Cross multiply
    7,678.86x = 11,518.23 × 2,132.28
  4. Step 4: Simplify right side
    7,678.86x = 24,560,091.46
  5. Step 5: Solve for x
    x = 24,560,091.46/7,678.86
  6. Step 6: Final answer
    x = 3,198.40

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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.