Home / 2,573.36-3,861.92-1,989.80

Finding the Fourth Proportional to 2,573.36, 3,861.92 and 1,989.80

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Solution

The fourth proportional to 2,573.36, 3,861.92 and 1,989.80 is: 2,986.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,573.36 : 3,861.92 = 1,989.80 : x
  2. Step 2: Convert to fraction form
    2,573.36/3,861.92 = 1,989.80/x
  3. Step 3: Cross multiply
    2,573.36x = 3,861.92 × 1,989.80
  4. Step 4: Simplify right side
    2,573.36x = 7,684,434.08
  5. Step 5: Solve for x
    x = 7,684,434.08/2,573.36
  6. Step 6: Final answer
    x = 2,986.15

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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.