Home / 5,457.40-8,186.10-1,994.20

Finding the Fourth Proportional to 5,457.40, 8,186.10 and 1,994.20

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Solution

The fourth proportional to 5,457.40, 8,186.10 and 1,994.20 is: 2,991.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457.40 : 8,186.10 = 1,994.20 : x
  2. Step 2: Convert to fraction form
    5,457.40/8,186.10 = 1,994.20/x
  3. Step 3: Cross multiply
    5,457.40x = 8,186.10 × 1,994.20
  4. Step 4: Simplify right side
    5,457.40x = 16,324,720.62
  5. Step 5: Solve for x
    x = 16,324,720.62/5,457.40
  6. Step 6: Final answer
    x = 2,991.30

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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.