Home / 3,485.43-5,228.09-1,405.38

Finding the Fourth Proportional to 3,485.43, 5,228.09 and 1,405.38

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Solution

The fourth proportional to 3,485.43, 5,228.09 and 1,405.38 is: 2,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485.43 : 5,228.09 = 1,405.38 : x
  2. Step 2: Convert to fraction form
    3,485.43/5,228.09 = 1,405.38/x
  3. Step 3: Cross multiply
    3,485.43x = 5,228.09 × 1,405.38
  4. Step 4: Simplify right side
    3,485.43x = 7,347,446.10
  5. Step 5: Solve for x
    x = 7,347,446.10/3,485.43
  6. Step 6: Final answer
    x = 2,108.05

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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.