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Finding the Fourth Proportional to 7,191.63, 10,789.04 and 2,809.13

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Solution

The fourth proportional to 7,191.63, 10,789.04 and 2,809.13 is: 4,214.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.63 : 10,789.04 = 2,809.13 : x
  2. Step 2: Convert to fraction form
    7,191.63/10,789.04 = 2,809.13/x
  3. Step 3: Cross multiply
    7,191.63x = 10,789.04 × 2,809.13
  4. Step 4: Simplify right side
    7,191.63x = 30,307,769.01
  5. Step 5: Solve for x
    x = 30,307,769.01/7,191.63
  6. Step 6: Final answer
    x = 4,214.31

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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.