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Finding the Fourth Proportional to 8,155.25, 11,254.25 and 4,429.25

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Solution

The fourth proportional to 8,155.25, 11,254.25 and 4,429.25 is: 6,112.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.25 : 11,254.25 = 4,429.25 : x
  2. Step 2: Convert to fraction form
    8,155.25/11,254.25 = 4,429.25/x
  3. Step 3: Cross multiply
    8,155.25x = 11,254.25 × 4,429.25
  4. Step 4: Simplify right side
    8,155.25x = 49,847,864.67
  5. Step 5: Solve for x
    x = 49,847,864.67/8,155.25
  6. Step 6: Final answer
    x = 6,112.37

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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.