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Finding the Fourth Proportional to 3,883.76, 5,357.16 and 2,487.44

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Solution

The fourth proportional to 3,883.76, 5,357.16 and 2,487.44 is: 3,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.76 : 5,357.16 = 2,487.44 : x
  2. Step 2: Convert to fraction form
    3,883.76/5,357.16 = 2,487.44/x
  3. Step 3: Cross multiply
    3,883.76x = 5,357.16 × 2,487.44
  4. Step 4: Simplify right side
    3,883.76x = 13,325,614.07
  5. Step 5: Solve for x
    x = 13,325,614.07/3,883.76
  6. Step 6: Final answer
    x = 3,431.11

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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.