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Finding the Fourth Proportional to 5,518, 7,615.20 and 3,095.59

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Solution

The fourth proportional to 5,518, 7,615.20 and 3,095.59 is: 4,272.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518 : 7,615.20 = 3,095.59 : x
  2. Step 2: Convert to fraction form
    5,518/7,615.20 = 3,095.59/x
  3. Step 3: Cross multiply
    5,518x = 7,615.20 × 3,095.59
  4. Step 4: Simplify right side
    5,518x = 23,573,536.97
  5. Step 5: Solve for x
    x = 23,573,536.97/5,518
  6. Step 6: Final answer
    x = 4,272.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.