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Finding the Fourth Proportional to 8,625.51, 12,927.45 and 3,689.36

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Solution

The fourth proportional to 8,625.51, 12,927.45 and 3,689.36 is: 5,529.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.51 : 12,927.45 = 3,689.36 : x
  2. Step 2: Convert to fraction form
    8,625.51/12,927.45 = 3,689.36/x
  3. Step 3: Cross multiply
    8,625.51x = 12,927.45 × 3,689.36
  4. Step 4: Simplify right side
    8,625.51x = 47,693,952.29
  5. Step 5: Solve for x
    x = 47,693,952.29/8,625.51
  6. Step 6: Final answer
    x = 5,529.41

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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.