Home / 8,285.49-11,436.39-6,618.51

Finding the Fourth Proportional to 8,285.49, 11,436.39 and 6,618.51

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Solution

The fourth proportional to 8,285.49, 11,436.39 and 6,618.51 is: 9,135.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,285.49 : 11,436.39 = 6,618.51 : x
  2. Step 2: Convert to fraction form
    8,285.49/11,436.39 = 6,618.51/x
  3. Step 3: Cross multiply
    8,285.49x = 11,436.39 × 6,618.51
  4. Step 4: Simplify right side
    8,285.49x = 75,691,861.58
  5. Step 5: Solve for x
    x = 75,691,861.58/8,285.49
  6. Step 6: Final answer
    x = 9,135.47

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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.