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Finding the Fourth Proportional to 3,457.96, 5,186.02 and 992.11

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Solution

The fourth proportional to 3,457.96, 5,186.02 and 992.11 is: 1,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,457.96 : 5,186.02 = 992.11 : x
  2. Step 2: Convert to fraction form
    3,457.96/5,186.02 = 992.11/x
  3. Step 3: Cross multiply
    3,457.96x = 5,186.02 × 992.11
  4. Step 4: Simplify right side
    3,457.96x = 5,145,102.30
  5. Step 5: Solve for x
    x = 5,145,102.30/3,457.96
  6. Step 6: Final answer
    x = 1,487.90

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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.