Home / 5,628.20-8,442.48-2,117.86

Finding the Fourth Proportional to 5,628.20, 8,442.48 and 2,117.86

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Solution

The fourth proportional to 5,628.20, 8,442.48 and 2,117.86 is: 3,176.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.20 : 8,442.48 = 2,117.86 : x
  2. Step 2: Convert to fraction form
    5,628.20/8,442.48 = 2,117.86/x
  3. Step 3: Cross multiply
    5,628.20x = 8,442.48 × 2,117.86
  4. Step 4: Simplify right side
    5,628.20x = 17,879,990.69
  5. Step 5: Solve for x
    x = 17,879,990.69/5,628.20
  6. Step 6: Final answer
    x = 3,176.86

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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.