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Finding the Fourth Proportional to 7,667.77, 11,495.40 and 3,971.08

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Solution

The fourth proportional to 7,667.77, 11,495.40 and 3,971.08 is: 5,953.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,667.77 : 11,495.40 = 3,971.08 : x
  2. Step 2: Convert to fraction form
    7,667.77/11,495.40 = 3,971.08/x
  3. Step 3: Cross multiply
    7,667.77x = 11,495.40 × 3,971.08
  4. Step 4: Simplify right side
    7,667.77x = 45,649,153.03
  5. Step 5: Solve for x
    x = 45,649,153.03/7,667.77
  6. Step 6: Final answer
    x = 5,953.38

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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.