Home / 5,156.27-7,115.65-2,918.09

Finding the Fourth Proportional to 5,156.27, 7,115.65 and 2,918.09

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Solution

The fourth proportional to 5,156.27, 7,115.65 and 2,918.09 is: 4,026.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.27 : 7,115.65 = 2,918.09 : x
  2. Step 2: Convert to fraction form
    5,156.27/7,115.65 = 2,918.09/x
  3. Step 3: Cross multiply
    5,156.27x = 7,115.65 × 2,918.09
  4. Step 4: Simplify right side
    5,156.27x = 20,764,117.60
  5. Step 5: Solve for x
    x = 20,764,117.60/5,156.27
  6. Step 6: Final answer
    x = 4,026.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.