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Finding the Fourth Proportional to 8,688.01, 11,979.94 and 6,454.03

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Solution

The fourth proportional to 8,688.01, 11,979.94 and 6,454.03 is: 8,899.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.01 : 11,979.94 = 6,454.03 : x
  2. Step 2: Convert to fraction form
    8,688.01/11,979.94 = 6,454.03/x
  3. Step 3: Cross multiply
    8,688.01x = 11,979.94 × 6,454.03
  4. Step 4: Simplify right side
    8,688.01x = 77,318,816.12
  5. Step 5: Solve for x
    x = 77,318,816.12/8,688.01
  6. Step 6: Final answer
    x = 8,899.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.