Home / 3,902.90-5,385.70-2,224.24

Finding the Fourth Proportional to 3,902.90, 5,385.70 and 2,224.24

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Solution

The fourth proportional to 3,902.90, 5,385.70 and 2,224.24 is: 3,069.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.90 : 5,385.70 = 2,224.24 : x
  2. Step 2: Convert to fraction form
    3,902.90/5,385.70 = 2,224.24/x
  3. Step 3: Cross multiply
    3,902.90x = 5,385.70 × 2,224.24
  4. Step 4: Simplify right side
    3,902.90x = 11,979,089.37
  5. Step 5: Solve for x
    x = 11,979,089.37/3,902.90
  6. Step 6: Final answer
    x = 3,069.28

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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.