Home / 5,423.78-8,122.68-2,784.35

Finding the Fourth Proportional to 5,423.78, 8,122.68 and 2,784.35

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Solution

The fourth proportional to 5,423.78, 8,122.68 and 2,784.35 is: 4,169.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.78 : 8,122.68 = 2,784.35 : x
  2. Step 2: Convert to fraction form
    5,423.78/8,122.68 = 2,784.35/x
  3. Step 3: Cross multiply
    5,423.78x = 8,122.68 × 2,784.35
  4. Step 4: Simplify right side
    5,423.78x = 22,616,404.36
  5. Step 5: Solve for x
    x = 22,616,404.36/5,423.78
  6. Step 6: Final answer
    x = 4,169.86

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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.