Home / 5,385.51-8,078.67-2,788.92

Finding the Fourth Proportional to 5,385.51, 8,078.67 and 2,788.92

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Solution

The fourth proportional to 5,385.51, 8,078.67 and 2,788.92 is: 4,183.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.51 : 8,078.67 = 2,788.92 : x
  2. Step 2: Convert to fraction form
    5,385.51/8,078.67 = 2,788.92/x
  3. Step 3: Cross multiply
    5,385.51x = 8,078.67 × 2,788.92
  4. Step 4: Simplify right side
    5,385.51x = 22,530,764.34
  5. Step 5: Solve for x
    x = 22,530,764.34/5,385.51
  6. Step 6: Final answer
    x = 4,183.59

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1.5x scale

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.