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Finding the Fourth Proportional to 6,372.56, 9,558.84 and 1,990.05

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Solution

The fourth proportional to 6,372.56, 9,558.84 and 1,990.05 is: 2,985.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,372.56 : 9,558.84 = 1,990.05 : x
  2. Step 2: Convert to fraction form
    6,372.56/9,558.84 = 1,990.05/x
  3. Step 3: Cross multiply
    6,372.56x = 9,558.84 × 1,990.05
  4. Step 4: Simplify right side
    6,372.56x = 19,022,569.54
  5. Step 5: Solve for x
    x = 19,022,569.54/6,372.56
  6. Step 6: Final answer
    x = 2,985.08

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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.