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Finding the Fourth Proportional to 8,511.89, 11,742.98 and 5,366.25

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Solution

The fourth proportional to 8,511.89, 11,742.98 and 5,366.25 is: 7,403.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.89 : 11,742.98 = 5,366.25 : x
  2. Step 2: Convert to fraction form
    8,511.89/11,742.98 = 5,366.25/x
  3. Step 3: Cross multiply
    8,511.89x = 11,742.98 × 5,366.25
  4. Step 4: Simplify right side
    8,511.89x = 63,015,739.59
  5. Step 5: Solve for x
    x = 63,015,739.59/8,511.89
  6. Step 6: Final answer
    x = 7,403.26

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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.