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Finding the Fourth Proportional to 3,039.36, 4,559.08 and 818.32

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Solution

The fourth proportional to 3,039.36, 4,559.08 and 818.32 is: 1,227.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,039.36 : 4,559.08 = 818.32 : x
  2. Step 2: Convert to fraction form
    3,039.36/4,559.08 = 818.32/x
  3. Step 3: Cross multiply
    3,039.36x = 4,559.08 × 818.32
  4. Step 4: Simplify right side
    3,039.36x = 3,730,786.35
  5. Step 5: Solve for x
    x = 3,730,786.35/3,039.36
  6. Step 6: Final answer
    x = 1,227.49

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Double scale
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Similar ratio
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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.