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Finding the Fourth Proportional to 2,765.36, 4,148.32 and 818.12

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Solution

The fourth proportional to 2,765.36, 4,148.32 and 818.12 is: 1,227.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.36 : 4,148.32 = 818.12 : x
  2. Step 2: Convert to fraction form
    2,765.36/4,148.32 = 818.12/x
  3. Step 3: Cross multiply
    2,765.36x = 4,148.32 × 818.12
  4. Step 4: Simplify right side
    2,765.36x = 3,393,823.56
  5. Step 5: Solve for x
    x = 3,393,823.56/2,765.36
  6. Step 6: Final answer
    x = 1,227.26

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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.