Home / 2,102.42-3,153.24-621.34

Finding the Fourth Proportional to 2,102.42, 3,153.24 and 621.34

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Solution

The fourth proportional to 2,102.42, 3,153.24 and 621.34 is: 931.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.42 : 3,153.24 = 621.34 : x
  2. Step 2: Convert to fraction form
    2,102.42/3,153.24 = 621.34/x
  3. Step 3: Cross multiply
    2,102.42x = 3,153.24 × 621.34
  4. Step 4: Simplify right side
    2,102.42x = 1,959,226.26
  5. Step 5: Solve for x
    x = 1,959,226.26/2,102.42
  6. Step 6: Final answer
    x = 931.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.