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Finding the Fourth Proportional to 8,624.34, 12,936.60 and 6,903.90

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Solution

The fourth proportional to 8,624.34, 12,936.60 and 6,903.90 is: 10,355.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.34 : 12,936.60 = 6,903.90 : x
  2. Step 2: Convert to fraction form
    8,624.34/12,936.60 = 6,903.90/x
  3. Step 3: Cross multiply
    8,624.34x = 12,936.60 × 6,903.90
  4. Step 4: Simplify right side
    8,624.34x = 89,312,992.74
  5. Step 5: Solve for x
    x = 89,312,992.74/8,624.34
  6. Step 6: Final answer
    x = 10,355.92

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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.