Home / 3,986.84-5,973.78-3,160.64

Finding the Fourth Proportional to 3,986.84, 5,973.78 and 3,160.64

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Solution

The fourth proportional to 3,986.84, 5,973.78 and 3,160.64 is: 4,735.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.84 : 5,973.78 = 3,160.64 : x
  2. Step 2: Convert to fraction form
    3,986.84/5,973.78 = 3,160.64/x
  3. Step 3: Cross multiply
    3,986.84x = 5,973.78 × 3,160.64
  4. Step 4: Simplify right side
    3,986.84x = 18,880,968.02
  5. Step 5: Solve for x
    x = 18,880,968.02/3,986.84
  6. Step 6: Final answer
    x = 4,735.82

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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.