Home / 8,178.75-11,287.89-4,820.49

Finding the Fourth Proportional to 8,178.75, 11,287.89 and 4,820.49

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Solution

The fourth proportional to 8,178.75, 11,287.89 and 4,820.49 is: 6,652.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.75 : 11,287.89 = 4,820.49 : x
  2. Step 2: Convert to fraction form
    8,178.75/11,287.89 = 4,820.49/x
  3. Step 3: Cross multiply
    8,178.75x = 11,287.89 × 4,820.49
  4. Step 4: Simplify right side
    8,178.75x = 54,413,160.87
  5. Step 5: Solve for x
    x = 54,413,160.87/8,178.75
  6. Step 6: Final answer
    x = 6,652.99

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Half scale
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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.