Home / 8,111.14-11,192.48-6,436.72

Finding the Fourth Proportional to 8,111.14, 11,192.48 and 6,436.72

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Solution

The fourth proportional to 8,111.14, 11,192.48 and 6,436.72 is: 8,881.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.14 : 11,192.48 = 6,436.72 : x
  2. Step 2: Convert to fraction form
    8,111.14/11,192.48 = 6,436.72/x
  3. Step 3: Cross multiply
    8,111.14x = 11,192.48 × 6,436.72
  4. Step 4: Simplify right side
    8,111.14x = 72,042,802.85
  5. Step 5: Solve for x
    x = 72,042,802.85/8,111.14
  6. Step 6: Final answer
    x = 8,881.96

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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.