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Finding the Fourth Proportional to 3,381.90, 5,066.64 and 1,995.99

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Solution

The fourth proportional to 3,381.90, 5,066.64 and 1,995.99 is: 2,990.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.90 : 5,066.64 = 1,995.99 : x
  2. Step 2: Convert to fraction form
    3,381.90/5,066.64 = 1,995.99/x
  3. Step 3: Cross multiply
    3,381.90x = 5,066.64 × 1,995.99
  4. Step 4: Simplify right side
    3,381.90x = 10,112,962.77
  5. Step 5: Solve for x
    x = 10,112,962.77/3,381.90
  6. Step 6: Final answer
    x = 2,990.32

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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.