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Finding the Fourth Proportional to 8,475.30, 12,702.30 and 4,316.34

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Solution

The fourth proportional to 8,475.30, 12,702.30 and 4,316.34 is: 6,469.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,475.30 : 12,702.30 = 4,316.34 : x
  2. Step 2: Convert to fraction form
    8,475.30/12,702.30 = 4,316.34/x
  3. Step 3: Cross multiply
    8,475.30x = 12,702.30 × 4,316.34
  4. Step 4: Simplify right side
    8,475.30x = 54,827,445.58
  5. Step 5: Solve for x
    x = 54,827,445.58/8,475.30
  6. Step 6: Final answer
    x = 6,469.09

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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.