Home / 8,107.26-11,185.45-6,400.36

Finding the Fourth Proportional to 8,107.26, 11,185.45 and 6,400.36

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Solution

The fourth proportional to 8,107.26, 11,185.45 and 6,400.36 is: 8,830.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.26 : 11,185.45 = 6,400.36 : x
  2. Step 2: Convert to fraction form
    8,107.26/11,185.45 = 6,400.36/x
  3. Step 3: Cross multiply
    8,107.26x = 11,185.45 × 6,400.36
  4. Step 4: Simplify right side
    8,107.26x = 71,590,818.83
  5. Step 5: Solve for x
    x = 71,590,818.83/8,107.26
  6. Step 6: Final answer
    x = 8,830.46

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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.