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Finding the Fourth Proportional to 8,503.25, 11,736.79 and 5,518.90

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Solution

The fourth proportional to 8,503.25, 11,736.79 and 5,518.90 is: 7,617.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,503.25 : 11,736.79 = 5,518.90 : x
  2. Step 2: Convert to fraction form
    8,503.25/11,736.79 = 5,518.90/x
  3. Step 3: Cross multiply
    8,503.25x = 11,736.79 × 5,518.90
  4. Step 4: Simplify right side
    8,503.25x = 64,774,127.19
  5. Step 5: Solve for x
    x = 64,774,127.19/8,503.25
  6. Step 6: Final answer
    x = 7,617.58

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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.