Home / 8,695.64-13,043.36-2,121.84

Finding the Fourth Proportional to 8,695.64, 13,043.36 and 2,121.84

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Solution

The fourth proportional to 8,695.64, 13,043.36 and 2,121.84 is: 3,182.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.64 : 13,043.36 = 2,121.84 : x
  2. Step 2: Convert to fraction form
    8,695.64/13,043.36 = 2,121.84/x
  3. Step 3: Cross multiply
    8,695.64x = 13,043.36 × 2,121.84
  4. Step 4: Simplify right side
    8,695.64x = 27,675,922.98
  5. Step 5: Solve for x
    x = 27,675,922.98/8,695.64
  6. Step 6: Final answer
    x = 3,182.74

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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.