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Finding the Fourth Proportional to 6,667.08, 9,978.90 and 4,911.38

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Solution

The fourth proportional to 6,667.08, 9,978.90 and 4,911.38 is: 7,351.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,667.08 : 9,978.90 = 4,911.38 : x
  2. Step 2: Convert to fraction form
    6,667.08/9,978.90 = 4,911.38/x
  3. Step 3: Cross multiply
    6,667.08x = 9,978.90 × 4,911.38
  4. Step 4: Simplify right side
    6,667.08x = 49,010,195.12
  5. Step 5: Solve for x
    x = 49,010,195.12/6,667.08
  6. Step 6: Final answer
    x = 7,351.07

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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.