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Finding the Fourth Proportional to 3,991.70, 5,987.55 and 2,242.10

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Solution

The fourth proportional to 3,991.70, 5,987.55 and 2,242.10 is: 3,363.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.70 : 5,987.55 = 2,242.10 : x
  2. Step 2: Convert to fraction form
    3,991.70/5,987.55 = 2,242.10/x
  3. Step 3: Cross multiply
    3,991.70x = 5,987.55 × 2,242.10
  4. Step 4: Simplify right side
    3,991.70x = 13,424,685.86
  5. Step 5: Solve for x
    x = 13,424,685.86/3,991.70
  6. Step 6: Final answer
    x = 3,363.15

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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.