Home / 6,221.40-9,324.90-2,521.80

Finding the Fourth Proportional to 6,221.40, 9,324.90 and 2,521.80

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Solution

The fourth proportional to 6,221.40, 9,324.90 and 2,521.80 is: 3,779.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,221.40 : 9,324.90 = 2,521.80 : x
  2. Step 2: Convert to fraction form
    6,221.40/9,324.90 = 2,521.80/x
  3. Step 3: Cross multiply
    6,221.40x = 9,324.90 × 2,521.80
  4. Step 4: Simplify right side
    6,221.40x = 23,515,532.82
  5. Step 5: Solve for x
    x = 23,515,532.82/6,221.40
  6. Step 6: Final answer
    x = 3,779.78

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1.5x scale

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.