Home / 3,076.35-4,611.80-1,128.10

Finding the Fourth Proportional to 3,076.35, 4,611.80 and 1,128.10

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Solution

The fourth proportional to 3,076.35, 4,611.80 and 1,128.10 is: 1,691.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.35 : 4,611.80 = 1,128.10 : x
  2. Step 2: Convert to fraction form
    3,076.35/4,611.80 = 1,128.10/x
  3. Step 3: Cross multiply
    3,076.35x = 4,611.80 × 1,128.10
  4. Step 4: Simplify right side
    3,076.35x = 5,202,565.94
  5. Step 5: Solve for x
    x = 5,202,565.94/3,076.35
  6. Step 6: Final answer
    x = 1,691.15

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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.