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Finding the Fourth Proportional to 3,609.78, 5,414.07 and 1,012.18

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Solution

The fourth proportional to 3,609.78, 5,414.07 and 1,012.18 is: 1,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.78 : 5,414.07 = 1,012.18 : x
  2. Step 2: Convert to fraction form
    3,609.78/5,414.07 = 1,012.18/x
  3. Step 3: Cross multiply
    3,609.78x = 5,414.07 × 1,012.18
  4. Step 4: Simplify right side
    3,609.78x = 5,480,013.37
  5. Step 5: Solve for x
    x = 5,480,013.37/3,609.78
  6. Step 6: Final answer
    x = 1,518.10

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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.