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Finding the Fourth Proportional to 6,387.96, 8,816.94 and 6,020.76

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Solution

The fourth proportional to 6,387.96, 8,816.94 and 6,020.76 is: 8,310.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.96 : 8,816.94 = 6,020.76 : x
  2. Step 2: Convert to fraction form
    6,387.96/8,816.94 = 6,020.76/x
  3. Step 3: Cross multiply
    6,387.96x = 8,816.94 × 6,020.76
  4. Step 4: Simplify right side
    6,387.96x = 53,084,679.67
  5. Step 5: Solve for x
    x = 53,084,679.67/6,387.96
  6. Step 6: Final answer
    x = 8,310.11

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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.