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Finding the Fourth Proportional to 3,184.46, 4,777.22 and 992.75

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Solution

The fourth proportional to 3,184.46, 4,777.22 and 992.75 is: 1,489.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,184.46 : 4,777.22 = 992.75 : x
  2. Step 2: Convert to fraction form
    3,184.46/4,777.22 = 992.75/x
  3. Step 3: Cross multiply
    3,184.46x = 4,777.22 × 992.75
  4. Step 4: Simplify right side
    3,184.46x = 4,742,556.31
  5. Step 5: Solve for x
    x = 4,742,556.31/3,184.46
  6. Step 6: Final answer
    x = 1,489.28

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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.