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Finding the Fourth Proportional to 7,706.88, 11,566.08 and 3,605.76

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Solution

The fourth proportional to 7,706.88, 11,566.08 and 3,605.76 is: 5,411.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,706.88 : 11,566.08 = 3,605.76 : x
  2. Step 2: Convert to fraction form
    7,706.88/11,566.08 = 3,605.76/x
  3. Step 3: Cross multiply
    7,706.88x = 11,566.08 × 3,605.76
  4. Step 4: Simplify right side
    7,706.88x = 41,704,508.62
  5. Step 5: Solve for x
    x = 41,704,508.62/7,706.88
  6. Step 6: Final answer
    x = 5,411.33

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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.