Home / 8,071.85-11,138.59-5,418.83

Finding the Fourth Proportional to 8,071.85, 11,138.59 and 5,418.83

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Solution

The fourth proportional to 8,071.85, 11,138.59 and 5,418.83 is: 7,477.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,071.85 : 11,138.59 = 5,418.83 : x
  2. Step 2: Convert to fraction form
    8,071.85/11,138.59 = 5,418.83/x
  3. Step 3: Cross multiply
    8,071.85x = 11,138.59 × 5,418.83
  4. Step 4: Simplify right side
    8,071.85x = 60,358,125.65
  5. Step 5: Solve for x
    x = 60,358,125.65/8,071.85
  6. Step 6: Final answer
    x = 7,477.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.