Home / 5,385.62-8,078.18-1,876.42

Finding the Fourth Proportional to 5,385.62, 8,078.18 and 1,876.42

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Solution

The fourth proportional to 5,385.62, 8,078.18 and 1,876.42 is: 2,814.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.62 : 8,078.18 = 1,876.42 : x
  2. Step 2: Convert to fraction form
    5,385.62/8,078.18 = 1,876.42/x
  3. Step 3: Cross multiply
    5,385.62x = 8,078.18 × 1,876.42
  4. Step 4: Simplify right side
    5,385.62x = 15,158,043.01
  5. Step 5: Solve for x
    x = 15,158,043.01/5,385.62
  6. Step 6: Final answer
    x = 2,814.54

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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.