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Finding the Fourth Proportional to 3,004.92, 4,507.04 and 813.86

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Solution

The fourth proportional to 3,004.92, 4,507.04 and 813.86 is: 1,220.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,004.92 : 4,507.04 = 813.86 : x
  2. Step 2: Convert to fraction form
    3,004.92/4,507.04 = 813.86/x
  3. Step 3: Cross multiply
    3,004.92x = 4,507.04 × 813.86
  4. Step 4: Simplify right side
    3,004.92x = 3,668,099.57
  5. Step 5: Solve for x
    x = 3,668,099.57/3,004.92
  6. Step 6: Final answer
    x = 1,220.70

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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.