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Finding the Fourth Proportional to 6,381.45, 9,572.11 and 1,998.95

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Solution

The fourth proportional to 6,381.45, 9,572.11 and 1,998.95 is: 2,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381.45 : 9,572.11 = 1,998.95 : x
  2. Step 2: Convert to fraction form
    6,381.45/9,572.11 = 1,998.95/x
  3. Step 3: Cross multiply
    6,381.45x = 9,572.11 × 1,998.95
  4. Step 4: Simplify right side
    6,381.45x = 19,134,116.43
  5. Step 5: Solve for x
    x = 19,134,116.43/6,381.45
  6. Step 6: Final answer
    x = 2,998.40

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.