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Finding the Fourth Proportional to 7,776.68, 11,668.06 and 5,401.64

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Solution

The fourth proportional to 7,776.68, 11,668.06 and 5,401.64 is: 8,104.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.68 : 11,668.06 = 5,401.64 : x
  2. Step 2: Convert to fraction form
    7,776.68/11,668.06 = 5,401.64/x
  3. Step 3: Cross multiply
    7,776.68x = 11,668.06 × 5,401.64
  4. Step 4: Simplify right side
    7,776.68x = 63,026,659.62
  5. Step 5: Solve for x
    x = 63,026,659.62/7,776.68
  6. Step 6: Final answer
    x = 8,104.57

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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.