Home / 3,922.30-5,411.10-2,429.20

Finding the Fourth Proportional to 3,922.30, 5,411.10 and 2,429.20

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Solution

The fourth proportional to 3,922.30, 5,411.10 and 2,429.20 is: 3,351.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.30 : 5,411.10 = 2,429.20 : x
  2. Step 2: Convert to fraction form
    3,922.30/5,411.10 = 2,429.20/x
  3. Step 3: Cross multiply
    3,922.30x = 5,411.10 × 2,429.20
  4. Step 4: Simplify right side
    3,922.30x = 13,144,644.12
  5. Step 5: Solve for x
    x = 13,144,644.12/3,922.30
  6. Step 6: Final answer
    x = 3,351.26

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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.