Home / 2,082.40-3,116.80-1,890.52

Finding the Fourth Proportional to 2,082.40, 3,116.80 and 1,890.52

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Solution

The fourth proportional to 2,082.40, 3,116.80 and 1,890.52 is: 2,829.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.40 : 3,116.80 = 1,890.52 : x
  2. Step 2: Convert to fraction form
    2,082.40/3,116.80 = 1,890.52/x
  3. Step 3: Cross multiply
    2,082.40x = 3,116.80 × 1,890.52
  4. Step 4: Simplify right side
    2,082.40x = 5,892,372.74
  5. Step 5: Solve for x
    x = 5,892,372.74/2,082.40
  6. Step 6: Final answer
    x = 2,829.61

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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.