Home / 1,414.90-2,122.35-1,390.60

Finding the Fourth Proportional to 1,414.90, 2,122.35 and 1,390.60

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Solution

The fourth proportional to 1,414.90, 2,122.35 and 1,390.60 is: 2,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.90 : 2,122.35 = 1,390.60 : x
  2. Step 2: Convert to fraction form
    1,414.90/2,122.35 = 1,390.60/x
  3. Step 3: Cross multiply
    1,414.90x = 2,122.35 × 1,390.60
  4. Step 4: Simplify right side
    1,414.90x = 2,951,339.91
  5. Step 5: Solve for x
    x = 2,951,339.91/1,414.90
  6. Step 6: Final answer
    x = 2,085.90

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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.