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Finding the Fourth Proportional to 3,421.62, 5,125.14 and 1,957.14

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Solution

The fourth proportional to 3,421.62, 5,125.14 and 1,957.14 is: 2,931.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.62 : 5,125.14 = 1,957.14 : x
  2. Step 2: Convert to fraction form
    3,421.62/5,125.14 = 1,957.14/x
  3. Step 3: Cross multiply
    3,421.62x = 5,125.14 × 1,957.14
  4. Step 4: Simplify right side
    3,421.62x = 10,030,616.50
  5. Step 5: Solve for x
    x = 10,030,616.50/3,421.62
  6. Step 6: Final answer
    x = 2,931.54

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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.