Home / 8,529.96-11,760.72-7,115.70

Finding the Fourth Proportional to 8,529.96, 11,760.72 and 7,115.70

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Solution

The fourth proportional to 8,529.96, 11,760.72 and 7,115.70 is: 9,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,529.96 : 11,760.72 = 7,115.70 : x
  2. Step 2: Convert to fraction form
    8,529.96/11,760.72 = 7,115.70/x
  3. Step 3: Cross multiply
    8,529.96x = 11,760.72 × 7,115.70
  4. Step 4: Simplify right side
    8,529.96x = 83,685,755.30
  5. Step 5: Solve for x
    x = 83,685,755.30/8,529.96
  6. Step 6: Final answer
    x = 9,810.80

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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.