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Finding the Fourth Proportional to 6,489.51, 8,958.97 and 5,199.35

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Solution

The fourth proportional to 6,489.51, 8,958.97 and 5,199.35 is: 7,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,489.51 : 8,958.97 = 5,199.35 : x
  2. Step 2: Convert to fraction form
    6,489.51/8,958.97 = 5,199.35/x
  3. Step 3: Cross multiply
    6,489.51x = 8,958.97 × 5,199.35
  4. Step 4: Simplify right side
    6,489.51x = 46,580,823.43
  5. Step 5: Solve for x
    x = 46,580,823.43/6,489.51
  6. Step 6: Final answer
    x = 7,177.87

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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.