Home / 1,869.03-2,578.88-1,279.35

Finding the Fourth Proportional to 1,869.03, 2,578.88 and 1,279.35

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Solution

The fourth proportional to 1,869.03, 2,578.88 and 1,279.35 is: 1,765.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,869.03 : 2,578.88 = 1,279.35 : x
  2. Step 2: Convert to fraction form
    1,869.03/2,578.88 = 1,279.35/x
  3. Step 3: Cross multiply
    1,869.03x = 2,578.88 × 1,279.35
  4. Step 4: Simplify right side
    1,869.03x = 3,299,283.73
  5. Step 5: Solve for x
    x = 3,299,283.73/1,869.03
  6. Step 6: Final answer
    x = 1,765.24

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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.