Home / 3,890.90-5,838.28-1,699.31

Finding the Fourth Proportional to 3,890.90, 5,838.28 and 1,699.31

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Solution

The fourth proportional to 3,890.90, 5,838.28 and 1,699.31 is: 2,549.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.90 : 5,838.28 = 1,699.31 : x
  2. Step 2: Convert to fraction form
    3,890.90/5,838.28 = 1,699.31/x
  3. Step 3: Cross multiply
    3,890.90x = 5,838.28 × 1,699.31
  4. Step 4: Simplify right side
    3,890.90x = 9,921,057.93
  5. Step 5: Solve for x
    x = 9,921,057.93/3,890.90
  6. Step 6: Final answer
    x = 2,549.81

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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.