Home / 3,890.19-5,835.28-1,259.90

Finding the Fourth Proportional to 3,890.19, 5,835.28 and 1,259.90

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Solution

The fourth proportional to 3,890.19, 5,835.28 and 1,259.90 is: 1,889.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.19 : 5,835.28 = 1,259.90 : x
  2. Step 2: Convert to fraction form
    3,890.19/5,835.28 = 1,259.90/x
  3. Step 3: Cross multiply
    3,890.19x = 5,835.28 × 1,259.90
  4. Step 4: Simplify right side
    3,890.19x = 7,351,869.27
  5. Step 5: Solve for x
    x = 7,351,869.27/3,890.19
  6. Step 6: Final answer
    x = 1,889.85

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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.