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Finding the Fourth Proportional to 8,810.31, 13,215.47 and 3,879.98

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Solution

The fourth proportional to 8,810.31, 13,215.47 and 3,879.98 is: 5,819.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,810.31 : 13,215.47 = 3,879.98 : x
  2. Step 2: Convert to fraction form
    8,810.31/13,215.47 = 3,879.98/x
  3. Step 3: Cross multiply
    8,810.31x = 13,215.47 × 3,879.98
  4. Step 4: Simplify right side
    8,810.31x = 51,275,673.81
  5. Step 5: Solve for x
    x = 51,275,673.81/8,810.31
  6. Step 6: Final answer
    x = 5,819.96

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.