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Finding the Fourth Proportional to 8,458.88, 12,689.53 and 2,615.94

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Solution

The fourth proportional to 8,458.88, 12,689.53 and 2,615.94 is: 3,924.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.88 : 12,689.53 = 2,615.94 : x
  2. Step 2: Convert to fraction form
    8,458.88/12,689.53 = 2,615.94/x
  3. Step 3: Cross multiply
    8,458.88x = 12,689.53 × 2,615.94
  4. Step 4: Simplify right side
    8,458.88x = 33,195,036.03
  5. Step 5: Solve for x
    x = 33,195,036.03/8,458.88
  6. Step 6: Final answer
    x = 3,924.28

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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.