Home / 5,457.60-8,174.10-3,821.45

Finding the Fourth Proportional to 5,457.60, 8,174.10 and 3,821.45

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Solution

The fourth proportional to 5,457.60, 8,174.10 and 3,821.45 is: 5,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457.60 : 8,174.10 = 3,821.45 : x
  2. Step 2: Convert to fraction form
    5,457.60/8,174.10 = 3,821.45/x
  3. Step 3: Cross multiply
    5,457.60x = 8,174.10 × 3,821.45
  4. Step 4: Simplify right side
    5,457.60x = 31,236,923.27
  5. Step 5: Solve for x
    x = 31,236,923.27/5,457.60
  6. Step 6: Final answer
    x = 5,723.56

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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.