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Finding the Fourth Proportional to 6,381.56, 9,572.16 and 1,998.38

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Solution

The fourth proportional to 6,381.56, 9,572.16 and 1,998.38 is: 2,997.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.56 : 9,572.16 = 1,998.38 : x
  2. Step 2: Convert to fraction form
    6,381.56/9,572.16 = 1,998.38/x
  3. Step 3: Cross multiply
    6,381.56x = 9,572.16 × 1,998.38
  4. Step 4: Simplify right side
    6,381.56x = 19,128,813.10
  5. Step 5: Solve for x
    x = 19,128,813.10/6,381.56
  6. Step 6: Final answer
    x = 2,997.51

Related Problems

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Half scale
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Double scale
Find fourth proportional to 6,382.56, 9,573.66 and 1,999.38
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.