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Finding the Fourth Proportional to 5,991.21, 8,986.94 and 1,988.60

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Solution

The fourth proportional to 5,991.21, 8,986.94 and 1,988.60 is: 2,982.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,991.21 : 8,986.94 = 1,988.60 : x
  2. Step 2: Convert to fraction form
    5,991.21/8,986.94 = 1,988.60/x
  3. Step 3: Cross multiply
    5,991.21x = 8,986.94 × 1,988.60
  4. Step 4: Simplify right side
    5,991.21x = 17,871,374.01
  5. Step 5: Solve for x
    x = 17,871,374.01/5,991.21
  6. Step 6: Final answer
    x = 2,982.93

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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.