Home / 2,771.16-4,158.09-1,128.84

Finding the Fourth Proportional to 2,771.16, 4,158.09 and 1,128.84

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Solution

The fourth proportional to 2,771.16, 4,158.09 and 1,128.84 is: 1,693.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.16 : 4,158.09 = 1,128.84 : x
  2. Step 2: Convert to fraction form
    2,771.16/4,158.09 = 1,128.84/x
  3. Step 3: Cross multiply
    2,771.16x = 4,158.09 × 1,128.84
  4. Step 4: Simplify right side
    2,771.16x = 4,693,818.32
  5. Step 5: Solve for x
    x = 4,693,818.32/2,771.16
  6. Step 6: Final answer
    x = 1,693.81

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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.