Home / 3,905.75-5,854.50-1,438.99

Finding the Fourth Proportional to 3,905.75, 5,854.50 and 1,438.99

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Solution

The fourth proportional to 3,905.75, 5,854.50 and 1,438.99 is: 2,156.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.75 : 5,854.50 = 1,438.99 : x
  2. Step 2: Convert to fraction form
    3,905.75/5,854.50 = 1,438.99/x
  3. Step 3: Cross multiply
    3,905.75x = 5,854.50 × 1,438.99
  4. Step 4: Simplify right side
    3,905.75x = 8,424,552.32
  5. Step 5: Solve for x
    x = 8,424,552.32/3,905.75
  6. Step 6: Final answer
    x = 2,156.96

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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.