Home / 3,890.08-5,836.20-1,424.80

Finding the Fourth Proportional to 3,890.08, 5,836.20 and 1,424.80

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Solution

The fourth proportional to 3,890.08, 5,836.20 and 1,424.80 is: 2,137.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.08 : 5,836.20 = 1,424.80 : x
  2. Step 2: Convert to fraction form
    3,890.08/5,836.20 = 1,424.80/x
  3. Step 3: Cross multiply
    3,890.08x = 5,836.20 × 1,424.80
  4. Step 4: Simplify right side
    3,890.08x = 8,315,417.76
  5. Step 5: Solve for x
    x = 8,315,417.76/3,890.08
  6. Step 6: Final answer
    x = 2,137.60

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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.