Home / 8,537.90-11,782.66-5,180.72

Finding the Fourth Proportional to 8,537.90, 11,782.66 and 5,180.72

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Solution

The fourth proportional to 8,537.90, 11,782.66 and 5,180.72 is: 7,149.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,537.90 : 11,782.66 = 5,180.72 : x
  2. Step 2: Convert to fraction form
    8,537.90/11,782.66 = 5,180.72/x
  3. Step 3: Cross multiply
    8,537.90x = 11,782.66 × 5,180.72
  4. Step 4: Simplify right side
    8,537.90x = 61,042,662.32
  5. Step 5: Solve for x
    x = 61,042,662.32/8,537.90
  6. Step 6: Final answer
    x = 7,149.61

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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.