Home / 1,868.46-2,579.52-1,279.86

Finding the Fourth Proportional to 1,868.46, 2,579.52 and 1,279.86

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Solution

The fourth proportional to 1,868.46, 2,579.52 and 1,279.86 is: 1,766.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.46 : 2,579.52 = 1,279.86 : x
  2. Step 2: Convert to fraction form
    1,868.46/2,579.52 = 1,279.86/x
  3. Step 3: Cross multiply
    1,868.46x = 2,579.52 × 1,279.86
  4. Step 4: Simplify right side
    1,868.46x = 3,301,424.47
  5. Step 5: Solve for x
    x = 3,301,424.47/1,868.46
  6. Step 6: Final answer
    x = 1,766.92

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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.