Home / 5,278.92-7,919.34-1,768.58

Finding the Fourth Proportional to 5,278.92, 7,919.34 and 1,768.58

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Solution

The fourth proportional to 5,278.92, 7,919.34 and 1,768.58 is: 2,653.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.92 : 7,919.34 = 1,768.58 : x
  2. Step 2: Convert to fraction form
    5,278.92/7,919.34 = 1,768.58/x
  3. Step 3: Cross multiply
    5,278.92x = 7,919.34 × 1,768.58
  4. Step 4: Simplify right side
    5,278.92x = 14,005,986.34
  5. Step 5: Solve for x
    x = 14,005,986.34/5,278.92
  6. Step 6: Final answer
    x = 2,653.19

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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.