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Finding the Fourth Proportional to 8,659.39, 11,949.93 and 4,680.49

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Solution

The fourth proportional to 8,659.39, 11,949.93 and 4,680.49 is: 6,459.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.39 : 11,949.93 = 4,680.49 : x
  2. Step 2: Convert to fraction form
    8,659.39/11,949.93 = 4,680.49/x
  3. Step 3: Cross multiply
    8,659.39x = 11,949.93 × 4,680.49
  4. Step 4: Simplify right side
    8,659.39x = 55,931,527.87
  5. Step 5: Solve for x
    x = 55,931,527.87/8,659.39
  6. Step 6: Final answer
    x = 6,459.06

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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.