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Finding the Fourth Proportional to 3,781.04, 5,662.13 and 2,390.18

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Solution

The fourth proportional to 3,781.04, 5,662.13 and 2,390.18 is: 3,579.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.04 : 5,662.13 = 2,390.18 : x
  2. Step 2: Convert to fraction form
    3,781.04/5,662.13 = 2,390.18/x
  3. Step 3: Cross multiply
    3,781.04x = 5,662.13 × 2,390.18
  4. Step 4: Simplify right side
    3,781.04x = 13,533,469.62
  5. Step 5: Solve for x
    x = 13,533,469.62/3,781.04
  6. Step 6: Final answer
    x = 3,579.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.