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Finding the Fourth Proportional to 4,290.81, 5,921.41 and 2,427.81

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Solution

The fourth proportional to 4,290.81, 5,921.41 and 2,427.81 is: 3,350.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,290.81 : 5,921.41 = 2,427.81 : x
  2. Step 2: Convert to fraction form
    4,290.81/5,921.41 = 2,427.81/x
  3. Step 3: Cross multiply
    4,290.81x = 5,921.41 × 2,427.81
  4. Step 4: Simplify right side
    4,290.81x = 14,376,076.25
  5. Step 5: Solve for x
    x = 14,376,076.25/4,290.81
  6. Step 6: Final answer
    x = 3,350.43

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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.