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Finding the Fourth Proportional to 6,873.72, 9,489.69 and 4,780.68

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Solution

The fourth proportional to 6,873.72, 9,489.69 and 4,780.68 is: 6,600.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,873.72 : 9,489.69 = 4,780.68 : x
  2. Step 2: Convert to fraction form
    6,873.72/9,489.69 = 4,780.68/x
  3. Step 3: Cross multiply
    6,873.72x = 9,489.69 × 4,780.68
  4. Step 4: Simplify right side
    6,873.72x = 45,367,171.19
  5. Step 5: Solve for x
    x = 45,367,171.19/6,873.72
  6. Step 6: Final answer
    x = 6,600.09

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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.