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Finding the Fourth Proportional to 8,634.68, 12,935.33 and 7,231.35

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Solution

The fourth proportional to 8,634.68, 12,935.33 and 7,231.35 is: 10,833.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,634.68 : 12,935.33 = 7,231.35 : x
  2. Step 2: Convert to fraction form
    8,634.68/12,935.33 = 7,231.35/x
  3. Step 3: Cross multiply
    8,634.68x = 12,935.33 × 7,231.35
  4. Step 4: Simplify right side
    8,634.68x = 93,539,898.60
  5. Step 5: Solve for x
    x = 93,539,898.60/8,634.68
  6. Step 6: Final answer
    x = 10,833.05

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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.