Home / 3,180.66-4,772.91-1,128.50

Finding the Fourth Proportional to 3,180.66, 4,772.91 and 1,128.50

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Solution

The fourth proportional to 3,180.66, 4,772.91 and 1,128.50 is: 1,693.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.66 : 4,772.91 = 1,128.50 : x
  2. Step 2: Convert to fraction form
    3,180.66/4,772.91 = 1,128.50/x
  3. Step 3: Cross multiply
    3,180.66x = 4,772.91 × 1,128.50
  4. Step 4: Simplify right side
    3,180.66x = 5,386,228.94
  5. Step 5: Solve for x
    x = 5,386,228.94/3,180.66
  6. Step 6: Final answer
    x = 1,693.43

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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.