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Finding the Fourth Proportional to 8,504.74, 12,750.31 and 4,285.72

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Solution

The fourth proportional to 8,504.74, 12,750.31 and 4,285.72 is: 6,425.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,504.74 : 12,750.31 = 4,285.72 : x
  2. Step 2: Convert to fraction form
    8,504.74/12,750.31 = 4,285.72/x
  3. Step 3: Cross multiply
    8,504.74x = 12,750.31 × 4,285.72
  4. Step 4: Simplify right side
    8,504.74x = 54,644,279.87
  5. Step 5: Solve for x
    x = 54,644,279.87/8,504.74
  6. Step 6: Final answer
    x = 6,425.15

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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.