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Finding the Fourth Proportional to 3,996.84, 5,989.18 and 1,687.08

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Solution

The fourth proportional to 3,996.84, 5,989.18 and 1,687.08 is: 2,528.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,996.84 : 5,989.18 = 1,687.08 : x
  2. Step 2: Convert to fraction form
    3,996.84/5,989.18 = 1,687.08/x
  3. Step 3: Cross multiply
    3,996.84x = 5,989.18 × 1,687.08
  4. Step 4: Simplify right side
    3,996.84x = 10,104,225.79
  5. Step 5: Solve for x
    x = 10,104,225.79/3,996.84
  6. Step 6: Final answer
    x = 2,528.05

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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.