Home / 3,873.21-5,347.79-2,381.59

Finding the Fourth Proportional to 3,873.21, 5,347.79 and 2,381.59

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Solution

The fourth proportional to 3,873.21, 5,347.79 and 2,381.59 is: 3,288.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.21 : 5,347.79 = 2,381.59 : x
  2. Step 2: Convert to fraction form
    3,873.21/5,347.79 = 2,381.59/x
  3. Step 3: Cross multiply
    3,873.21x = 5,347.79 × 2,381.59
  4. Step 4: Simplify right side
    3,873.21x = 12,736,243.19
  5. Step 5: Solve for x
    x = 12,736,243.19/3,873.21
  6. Step 6: Final answer
    x = 3,288.29

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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.