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Finding the Fourth Proportional to 7,666.79, 11,491.98 and 3,965.29

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Solution

The fourth proportional to 7,666.79, 11,491.98 and 3,965.29 is: 5,943.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.79 : 11,491.98 = 3,965.29 : x
  2. Step 2: Convert to fraction form
    7,666.79/11,491.98 = 3,965.29/x
  3. Step 3: Cross multiply
    7,666.79x = 11,491.98 × 3,965.29
  4. Step 4: Simplify right side
    7,666.79x = 45,568,989.77
  5. Step 5: Solve for x
    x = 45,568,989.77/7,666.79
  6. Step 6: Final answer
    x = 5,943.69

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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.