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Finding the Fourth Proportional to 5,457.68, 8,186.52 and 1,994.12

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Solution

The fourth proportional to 5,457.68, 8,186.52 and 1,994.12 is: 2,991.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457.68 : 8,186.52 = 1,994.12 : x
  2. Step 2: Convert to fraction form
    5,457.68/8,186.52 = 1,994.12/x
  3. Step 3: Cross multiply
    5,457.68x = 8,186.52 × 1,994.12
  4. Step 4: Simplify right side
    5,457.68x = 16,324,903.26
  5. Step 5: Solve for x
    x = 16,324,903.26/5,457.68
  6. Step 6: Final answer
    x = 2,991.18

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.