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Finding the Fourth Proportional to 8,010.72, 12,016.08 and 5,239.72

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Solution

The fourth proportional to 8,010.72, 12,016.08 and 5,239.72 is: 7,859.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,010.72 : 12,016.08 = 5,239.72 : x
  2. Step 2: Convert to fraction form
    8,010.72/12,016.08 = 5,239.72/x
  3. Step 3: Cross multiply
    8,010.72x = 12,016.08 × 5,239.72
  4. Step 4: Simplify right side
    8,010.72x = 62,960,875.05
  5. Step 5: Solve for x
    x = 62,960,875.05/8,010.72
  6. Step 6: Final answer
    x = 7,859.58

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.