Home / 2,557.40-3,834.45-1,678.86

Finding the Fourth Proportional to 2,557.40, 3,834.45 and 1,678.86

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Solution

The fourth proportional to 2,557.40, 3,834.45 and 1,678.86 is: 2,517.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.40 : 3,834.45 = 1,678.86 : x
  2. Step 2: Convert to fraction form
    2,557.40/3,834.45 = 1,678.86/x
  3. Step 3: Cross multiply
    2,557.40x = 3,834.45 × 1,678.86
  4. Step 4: Simplify right side
    2,557.40x = 6,437,504.73
  5. Step 5: Solve for x
    x = 6,437,504.73/2,557.40
  6. Step 6: Final answer
    x = 2,517.21

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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.