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Finding the Fourth Proportional to 8,635.55, 12,945.81 and 7,327.79

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Solution

The fourth proportional to 8,635.55, 12,945.81 and 7,327.79 is: 10,985.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,635.55 : 12,945.81 = 7,327.79 : x
  2. Step 2: Convert to fraction form
    8,635.55/12,945.81 = 7,327.79/x
  3. Step 3: Cross multiply
    8,635.55x = 12,945.81 × 7,327.79
  4. Step 4: Simplify right side
    8,635.55x = 94,864,177.06
  5. Step 5: Solve for x
    x = 94,864,177.06/8,635.55
  6. Step 6: Final answer
    x = 10,985.31

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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.