Home / 5,405.13-8,107.76-1,942.38

Finding the Fourth Proportional to 5,405.13, 8,107.76 and 1,942.38

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Solution

The fourth proportional to 5,405.13, 8,107.76 and 1,942.38 is: 2,913.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.13 : 8,107.76 = 1,942.38 : x
  2. Step 2: Convert to fraction form
    5,405.13/8,107.76 = 1,942.38/x
  3. Step 3: Cross multiply
    5,405.13x = 8,107.76 × 1,942.38
  4. Step 4: Simplify right side
    5,405.13x = 15,748,300.62
  5. Step 5: Solve for x
    x = 15,748,300.62/5,405.13
  6. Step 6: Final answer
    x = 2,913.59

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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.