Home / 1,868.92-2,579.39-1,072.29

Finding the Fourth Proportional to 1,868.92, 2,579.39 and 1,072.29

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Solution

The fourth proportional to 1,868.92, 2,579.39 and 1,072.29 is: 1,479.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.92 : 2,579.39 = 1,072.29 : x
  2. Step 2: Convert to fraction form
    1,868.92/2,579.39 = 1,072.29/x
  3. Step 3: Cross multiply
    1,868.92x = 2,579.39 × 1,072.29
  4. Step 4: Simplify right side
    1,868.92x = 2,765,854.10
  5. Step 5: Solve for x
    x = 2,765,854.10/1,868.92
  6. Step 6: Final answer
    x = 1,479.92

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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.