Home / 8,078.65-12,117.94-2,155.52

Finding the Fourth Proportional to 8,078.65, 12,117.94 and 2,155.52

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Solution

The fourth proportional to 8,078.65, 12,117.94 and 2,155.52 is: 3,233.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.65 : 12,117.94 = 2,155.52 : x
  2. Step 2: Convert to fraction form
    8,078.65/12,117.94 = 2,155.52/x
  3. Step 3: Cross multiply
    8,078.65x = 12,117.94 × 2,155.52
  4. Step 4: Simplify right side
    8,078.65x = 26,120,486.93
  5. Step 5: Solve for x
    x = 26,120,486.93/8,078.65
  6. Step 6: Final answer
    x = 3,233.27

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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.