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Finding the Fourth Proportional to 8,702.58, 13,047.72 and 4,488.30

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Solution

The fourth proportional to 8,702.58, 13,047.72 and 4,488.30 is: 6,729.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.58 : 13,047.72 = 4,488.30 : x
  2. Step 2: Convert to fraction form
    8,702.58/13,047.72 = 4,488.30/x
  3. Step 3: Cross multiply
    8,702.58x = 13,047.72 × 4,488.30
  4. Step 4: Simplify right side
    8,702.58x = 58,562,081.68
  5. Step 5: Solve for x
    x = 58,562,081.68/8,702.58
  6. Step 6: Final answer
    x = 6,729.28

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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.