Home / 3,902.60-5,385.48-2,223.96

Finding the Fourth Proportional to 3,902.60, 5,385.48 and 2,223.96

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Solution

The fourth proportional to 3,902.60, 5,385.48 and 2,223.96 is: 3,069.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.60 : 5,385.48 = 2,223.96 : x
  2. Step 2: Convert to fraction form
    3,902.60/5,385.48 = 2,223.96/x
  3. Step 3: Cross multiply
    3,902.60x = 5,385.48 × 2,223.96
  4. Step 4: Simplify right side
    3,902.60x = 11,977,092.10
  5. Step 5: Solve for x
    x = 11,977,092.10/3,902.60
  6. Step 6: Final answer
    x = 3,069.00

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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.