Home / 3,902.55-5,385.29-2,223.72

Finding the Fourth Proportional to 3,902.55, 5,385.29 and 2,223.72

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Solution

The fourth proportional to 3,902.55, 5,385.29 and 2,223.72 is: 3,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.55 : 5,385.29 = 2,223.72 : x
  2. Step 2: Convert to fraction form
    3,902.55/5,385.29 = 2,223.72/x
  3. Step 3: Cross multiply
    3,902.55x = 5,385.29 × 2,223.72
  4. Step 4: Simplify right side
    3,902.55x = 11,975,365.96
  5. Step 5: Solve for x
    x = 11,975,365.96/3,902.55
  6. Step 6: Final answer
    x = 3,068.60

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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.