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Finding the Fourth Proportional to 2,861.04, 4,291.52 and 809.04

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Solution

The fourth proportional to 2,861.04, 4,291.52 and 809.04 is: 1,213.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.04 : 4,291.52 = 809.04 : x
  2. Step 2: Convert to fraction form
    2,861.04/4,291.52 = 809.04/x
  3. Step 3: Cross multiply
    2,861.04x = 4,291.52 × 809.04
  4. Step 4: Simplify right side
    2,861.04x = 3,472,011.34
  5. Step 5: Solve for x
    x = 3,472,011.34/2,861.04
  6. Step 6: Final answer
    x = 1,213.55

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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.