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Finding the Fourth Proportional to 8,688.96, 12,974.16 and 6,914.04

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Solution

The fourth proportional to 8,688.96, 12,974.16 and 6,914.04 is: 10,323.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.96 : 12,974.16 = 6,914.04 : x
  2. Step 2: Convert to fraction form
    8,688.96/12,974.16 = 6,914.04/x
  3. Step 3: Cross multiply
    8,688.96x = 12,974.16 × 6,914.04
  4. Step 4: Simplify right side
    8,688.96x = 89,703,861.21
  5. Step 5: Solve for x
    x = 89,703,861.21/8,688.96
  6. Step 6: Final answer
    x = 10,323.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.