Home / 2,905.10-4,357.68-713.85

Finding the Fourth Proportional to 2,905.10, 4,357.68 and 713.85

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Solution

The fourth proportional to 2,905.10, 4,357.68 and 713.85 is: 1,070.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.10 : 4,357.68 = 713.85 : x
  2. Step 2: Convert to fraction form
    2,905.10/4,357.68 = 713.85/x
  3. Step 3: Cross multiply
    2,905.10x = 4,357.68 × 713.85
  4. Step 4: Simplify right side
    2,905.10x = 3,110,729.87
  5. Step 5: Solve for x
    x = 3,110,729.87/2,905.10
  6. Step 6: Final answer
    x = 1,070.78

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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.