Home / 7,078.08-10,618.82-2,147.42

Finding the Fourth Proportional to 7,078.08, 10,618.82 and 2,147.42

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Solution

The fourth proportional to 7,078.08, 10,618.82 and 2,147.42 is: 3,221.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.08 : 10,618.82 = 2,147.42 : x
  2. Step 2: Convert to fraction form
    7,078.08/10,618.82 = 2,147.42/x
  3. Step 3: Cross multiply
    7,078.08x = 10,618.82 × 2,147.42
  4. Step 4: Simplify right side
    7,078.08x = 22,803,066.44
  5. Step 5: Solve for x
    x = 22,803,066.44/7,078.08
  6. Step 6: Final answer
    x = 3,221.65

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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.