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Finding the Fourth Proportional to 8,078.66, 11,144.58 and 7,015.04

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Solution

The fourth proportional to 8,078.66, 11,144.58 and 7,015.04 is: 9,677.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.66 : 11,144.58 = 7,015.04 : x
  2. Step 2: Convert to fraction form
    8,078.66/11,144.58 = 7,015.04/x
  3. Step 3: Cross multiply
    8,078.66x = 11,144.58 × 7,015.04
  4. Step 4: Simplify right side
    8,078.66x = 78,179,674.48
  5. Step 5: Solve for x
    x = 78,179,674.48/8,078.66
  6. Step 6: Final answer
    x = 9,677.31

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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.