Home / 8,702.28-13,043.88-4,485.78

Finding the Fourth Proportional to 8,702.28, 13,043.88 and 4,485.78

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Solution

The fourth proportional to 8,702.28, 13,043.88 and 4,485.78 is: 6,723.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.28 : 13,043.88 = 4,485.78 : x
  2. Step 2: Convert to fraction form
    8,702.28/13,043.88 = 4,485.78/x
  3. Step 3: Cross multiply
    8,702.28x = 13,043.88 × 4,485.78
  4. Step 4: Simplify right side
    8,702.28x = 58,511,976.03
  5. Step 5: Solve for x
    x = 58,511,976.03/8,702.28
  6. Step 6: Final answer
    x = 6,723.75

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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.