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Finding the Fourth Proportional to 8,468.53, 11,687.94 and 5,111.85

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Solution

The fourth proportional to 8,468.53, 11,687.94 and 5,111.85 is: 7,055.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,468.53 : 11,687.94 = 5,111.85 : x
  2. Step 2: Convert to fraction form
    8,468.53/11,687.94 = 5,111.85/x
  3. Step 3: Cross multiply
    8,468.53x = 11,687.94 × 5,111.85
  4. Step 4: Simplify right side
    8,468.53x = 59,746,996.09
  5. Step 5: Solve for x
    x = 59,746,996.09/8,468.53
  6. Step 6: Final answer
    x = 7,055.18

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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.