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Finding the Fourth Proportional to 2,789.55, 4,184.31 and 709.56

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Solution

The fourth proportional to 2,789.55, 4,184.31 and 709.56 is: 1,064.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.55 : 4,184.31 = 709.56 : x
  2. Step 2: Convert to fraction form
    2,789.55/4,184.31 = 709.56/x
  3. Step 3: Cross multiply
    2,789.55x = 4,184.31 × 709.56
  4. Step 4: Simplify right side
    2,789.55x = 2,969,019.00
  5. Step 5: Solve for x
    x = 2,969,019.00/2,789.55
  6. Step 6: Final answer
    x = 1,064.34

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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.