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Finding the Fourth Proportional to 8,699.88, 13,048.32 and 2,856.60

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Solution

The fourth proportional to 8,699.88, 13,048.32 and 2,856.60 is: 4,284.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.88 : 13,048.32 = 2,856.60 : x
  2. Step 2: Convert to fraction form
    8,699.88/13,048.32 = 2,856.60/x
  3. Step 3: Cross multiply
    8,699.88x = 13,048.32 × 2,856.60
  4. Step 4: Simplify right side
    8,699.88x = 37,273,830.91
  5. Step 5: Solve for x
    x = 37,273,830.91/8,699.88
  6. Step 6: Final answer
    x = 4,284.41

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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.