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Finding the Fourth Proportional to 3,009.91, 4,514.83 and 818.60

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Solution

The fourth proportional to 3,009.91, 4,514.83 and 818.60 is: 1,227.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.91 : 4,514.83 = 818.60 : x
  2. Step 2: Convert to fraction form
    3,009.91/4,514.83 = 818.60/x
  3. Step 3: Cross multiply
    3,009.91x = 4,514.83 × 818.60
  4. Step 4: Simplify right side
    3,009.91x = 3,695,839.84
  5. Step 5: Solve for x
    x = 3,695,839.84/3,009.91
  6. Step 6: Final answer
    x = 1,227.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.