Home / 8,066.39-11,128.19-4,920.75

Finding the Fourth Proportional to 8,066.39, 11,128.19 and 4,920.75

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Solution

The fourth proportional to 8,066.39, 11,128.19 and 4,920.75 is: 6,788.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,066.39 : 11,128.19 = 4,920.75 : x
  2. Step 2: Convert to fraction form
    8,066.39/11,128.19 = 4,920.75/x
  3. Step 3: Cross multiply
    8,066.39x = 11,128.19 × 4,920.75
  4. Step 4: Simplify right side
    8,066.39x = 54,759,016.34
  5. Step 5: Solve for x
    x = 54,759,016.34/8,066.39
  6. Step 6: Final answer
    x = 6,788.54

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Half 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.