Home / 8,127.81-11,213.82-4,770.77

Finding the Fourth Proportional to 8,127.81, 11,213.82 and 4,770.77

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Solution

The fourth proportional to 8,127.81, 11,213.82 and 4,770.77 is: 6,582.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.81 : 11,213.82 = 4,770.77 : x
  2. Step 2: Convert to fraction form
    8,127.81/11,213.82 = 4,770.77/x
  3. Step 3: Cross multiply
    8,127.81x = 11,213.82 × 4,770.77
  4. Step 4: Simplify right side
    8,127.81x = 53,498,499.97
  5. Step 5: Solve for x
    x = 53,498,499.97/8,127.81
  6. Step 6: Final answer
    x = 6,582.15

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Half scale
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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.