Home / 2,115.51-3,166.37-1,913.41

Finding the Fourth Proportional to 2,115.51, 3,166.37 and 1,913.41

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Solution

The fourth proportional to 2,115.51, 3,166.37 and 1,913.41 is: 2,863.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.51 : 3,166.37 = 1,913.41 : x
  2. Step 2: Convert to fraction form
    2,115.51/3,166.37 = 1,913.41/x
  3. Step 3: Cross multiply
    2,115.51x = 3,166.37 × 1,913.41
  4. Step 4: Simplify right side
    2,115.51x = 6,058,564.02
  5. Step 5: Solve for x
    x = 6,058,564.02/2,115.51
  6. Step 6: Final answer
    x = 2,863.88

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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.