Home / 3,145.26-4,716.80-953.40

Finding the Fourth Proportional to 3,145.26, 4,716.80 and 953.40

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Solution

The fourth proportional to 3,145.26, 4,716.80 and 953.40 is: 1,429.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.26 : 4,716.80 = 953.40 : x
  2. Step 2: Convert to fraction form
    3,145.26/4,716.80 = 953.40/x
  3. Step 3: Cross multiply
    3,145.26x = 4,716.80 × 953.40
  4. Step 4: Simplify right side
    3,145.26x = 4,496,997.12
  5. Step 5: Solve for x
    x = 4,496,997.12/3,145.26
  6. Step 6: Final answer
    x = 1,429.77

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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.