Home / 3,902.15-5,855.52-1,438.70

Finding the Fourth Proportional to 3,902.15, 5,855.52 and 1,438.70

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Solution

The fourth proportional to 3,902.15, 5,855.52 and 1,438.70 is: 2,158.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.15 : 5,855.52 = 1,438.70 : x
  2. Step 2: Convert to fraction form
    3,902.15/5,855.52 = 1,438.70/x
  3. Step 3: Cross multiply
    3,902.15x = 5,855.52 × 1,438.70
  4. Step 4: Simplify right side
    3,902.15x = 8,424,307.35
  5. Step 5: Solve for x
    x = 8,424,307.35/3,902.15
  6. Step 6: Final answer
    x = 2,158.89

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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.