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Finding the Fourth Proportional to 6,381.85, 9,572.77 and 1,999.31

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Solution

The fourth proportional to 6,381.85, 9,572.77 and 1,999.31 is: 2,998.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.85 : 9,572.77 = 1,999.31 : x
  2. Step 2: Convert to fraction form
    6,381.85/9,572.77 = 1,999.31/x
  3. Step 3: Cross multiply
    6,381.85x = 9,572.77 × 1,999.31
  4. Step 4: Simplify right side
    6,381.85x = 19,138,891.92
  5. Step 5: Solve for x
    x = 19,138,891.92/6,381.85
  6. Step 6: Final answer
    x = 2,998.96

Related Problems

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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.