Home / 8,089.51-11,169.60-7,960.34

Finding the Fourth Proportional to 8,089.51, 11,169.60 and 7,960.34

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Solution

The fourth proportional to 8,089.51, 11,169.60 and 7,960.34 is: 10,991.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,089.51 : 11,169.60 = 7,960.34 : x
  2. Step 2: Convert to fraction form
    8,089.51/11,169.60 = 7,960.34/x
  3. Step 3: Cross multiply
    8,089.51x = 11,169.60 × 7,960.34
  4. Step 4: Simplify right side
    8,089.51x = 88,913,813.66
  5. Step 5: Solve for x
    x = 88,913,813.66/8,089.51
  6. Step 6: Final answer
    x = 10,991.25

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Double scale
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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.