Home / 3,381.48-4,664.80-2,121.88

Finding the Fourth Proportional to 3,381.48, 4,664.80 and 2,121.88

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Solution

The fourth proportional to 3,381.48, 4,664.80 and 2,121.88 is: 2,927.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.48 : 4,664.80 = 2,121.88 : x
  2. Step 2: Convert to fraction form
    3,381.48/4,664.80 = 2,121.88/x
  3. Step 3: Cross multiply
    3,381.48x = 4,664.80 × 2,121.88
  4. Step 4: Simplify right side
    3,381.48x = 9,898,145.82
  5. Step 5: Solve for x
    x = 9,898,145.82/3,381.48
  6. Step 6: Final answer
    x = 2,927.16

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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.