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Finding the Fourth Proportional to 3,881.88, 5,358.42 and 2,488.68

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Solution

The fourth proportional to 3,881.88, 5,358.42 and 2,488.68 is: 3,435.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.88 : 5,358.42 = 2,488.68 : x
  2. Step 2: Convert to fraction form
    3,881.88/5,358.42 = 2,488.68/x
  3. Step 3: Cross multiply
    3,881.88x = 5,358.42 × 2,488.68
  4. Step 4: Simplify right side
    3,881.88x = 13,335,392.69
  5. Step 5: Solve for x
    x = 13,335,392.69/3,881.88
  6. Step 6: Final answer
    x = 3,435.29

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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.