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Finding the Fourth Proportional to 8,985.47, 13,479.14 and 3,443.50

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Solution

The fourth proportional to 8,985.47, 13,479.14 and 3,443.50 is: 5,165.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.47 : 13,479.14 = 3,443.50 : x
  2. Step 2: Convert to fraction form
    8,985.47/13,479.14 = 3,443.50/x
  3. Step 3: Cross multiply
    8,985.47x = 13,479.14 × 3,443.50
  4. Step 4: Simplify right side
    8,985.47x = 46,415,418.59
  5. Step 5: Solve for x
    x = 46,415,418.59/8,985.47
  6. Step 6: Final answer
    x = 5,165.61

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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.