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Finding the Fourth Proportional to 8,891.64, 13,339.82 and 2,651.67

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Solution

The fourth proportional to 8,891.64, 13,339.82 and 2,651.67 is: 3,978.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.64 : 13,339.82 = 2,651.67 : x
  2. Step 2: Convert to fraction form
    8,891.64/13,339.82 = 2,651.67/x
  3. Step 3: Cross multiply
    8,891.64x = 13,339.82 × 2,651.67
  4. Step 4: Simplify right side
    8,891.64x = 35,372,807.13
  5. Step 5: Solve for x
    x = 35,372,807.13/8,891.64
  6. Step 6: Final answer
    x = 3,978.21

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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.