Home / 3,922.04-5,412.58-2,153.72

Finding the Fourth Proportional to 3,922.04, 5,412.58 and 2,153.72

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Solution

The fourth proportional to 3,922.04, 5,412.58 and 2,153.72 is: 2,972.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.04 : 5,412.58 = 2,153.72 : x
  2. Step 2: Convert to fraction form
    3,922.04/5,412.58 = 2,153.72/x
  3. Step 3: Cross multiply
    3,922.04x = 5,412.58 × 2,153.72
  4. Step 4: Simplify right side
    3,922.04x = 11,657,181.80
  5. Step 5: Solve for x
    x = 11,657,181.80/3,922.04
  6. Step 6: Final answer
    x = 2,972.22

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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.