Home / 8,000.72-11,042.32-6,109.20

Finding the Fourth Proportional to 8,000.72, 11,042.32 and 6,109.20

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Solution

The fourth proportional to 8,000.72, 11,042.32 and 6,109.20 is: 8,431.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,000.72 : 11,042.32 = 6,109.20 : x
  2. Step 2: Convert to fraction form
    8,000.72/11,042.32 = 6,109.20/x
  3. Step 3: Cross multiply
    8,000.72x = 11,042.32 × 6,109.20
  4. Step 4: Simplify right side
    8,000.72x = 67,459,741.34
  5. Step 5: Solve for x
    x = 67,459,741.34/8,000.72
  6. Step 6: Final answer
    x = 8,431.71

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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.