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Finding the Fourth Proportional to 8,548.31, 12,788.74 and 6,474.31

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Solution

The fourth proportional to 8,548.31, 12,788.74 and 6,474.31 is: 9,685.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,548.31 : 12,788.74 = 6,474.31 : x
  2. Step 2: Convert to fraction form
    8,548.31/12,788.74 = 6,474.31/x
  3. Step 3: Cross multiply
    8,548.31x = 12,788.74 × 6,474.31
  4. Step 4: Simplify right side
    8,548.31x = 82,798,267.27
  5. Step 5: Solve for x
    x = 82,798,267.27/8,548.31
  6. Step 6: Final answer
    x = 9,685.92

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1.5x scale

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.