Home / 2,772.10-4,160.58-1,128.64

Finding the Fourth Proportional to 2,772.10, 4,160.58 and 1,128.64

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Solution

The fourth proportional to 2,772.10, 4,160.58 and 1,128.64 is: 1,693.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.10 : 4,160.58 = 1,128.64 : x
  2. Step 2: Convert to fraction form
    2,772.10/4,160.58 = 1,128.64/x
  3. Step 3: Cross multiply
    2,772.10x = 4,160.58 × 1,128.64
  4. Step 4: Simplify right side
    2,772.10x = 4,695,797.01
  5. Step 5: Solve for x
    x = 4,695,797.01/2,772.10
  6. Step 6: Final answer
    x = 1,693.95

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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.