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Finding the Fourth Proportional to 3,885.48, 5,362.92 and 2,487.42

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Solution

The fourth proportional to 3,885.48, 5,362.92 and 2,487.42 is: 3,433.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.48 : 5,362.92 = 2,487.42 : x
  2. Step 2: Convert to fraction form
    3,885.48/5,362.92 = 2,487.42/x
  3. Step 3: Cross multiply
    3,885.48x = 5,362.92 × 2,487.42
  4. Step 4: Simplify right side
    3,885.48x = 13,339,834.47
  5. Step 5: Solve for x
    x = 13,339,834.47/3,885.48
  6. Step 6: Final answer
    x = 3,433.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.