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Finding the Fourth Proportional to 8,507.88, 12,755.70 and 4,293.77

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Solution

The fourth proportional to 8,507.88, 12,755.70 and 4,293.77 is: 6,437.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,507.88 : 12,755.70 = 4,293.77 : x
  2. Step 2: Convert to fraction form
    8,507.88/12,755.70 = 4,293.77/x
  3. Step 3: Cross multiply
    8,507.88x = 12,755.70 × 4,293.77
  4. Step 4: Simplify right side
    8,507.88x = 54,769,978.21
  5. Step 5: Solve for x
    x = 54,769,978.21/8,507.88
  6. Step 6: Final answer
    x = 6,437.56

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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.