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Finding the Fourth Proportional to 6,667.34, 9,979.30 and 4,911.65

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Solution

The fourth proportional to 6,667.34, 9,979.30 and 4,911.65 is: 7,351.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,667.34 : 9,979.30 = 4,911.65 : x
  2. Step 2: Convert to fraction form
    6,667.34/9,979.30 = 4,911.65/x
  3. Step 3: Cross multiply
    6,667.34x = 9,979.30 × 4,911.65
  4. Step 4: Simplify right side
    6,667.34x = 49,014,841.12
  5. Step 5: Solve for x
    x = 49,014,841.12/6,667.34
  6. Step 6: Final answer
    x = 7,351.49

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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.