Home / 3,150.21-4,724.12-928.43

Finding the Fourth Proportional to 3,150.21, 4,724.12 and 928.43

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Solution

The fourth proportional to 3,150.21, 4,724.12 and 928.43 is: 1,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,150.21 : 4,724.12 = 928.43 : x
  2. Step 2: Convert to fraction form
    3,150.21/4,724.12 = 928.43/x
  3. Step 3: Cross multiply
    3,150.21x = 4,724.12 × 928.43
  4. Step 4: Simplify right side
    3,150.21x = 4,386,028.86
  5. Step 5: Solve for x
    x = 4,386,028.86/3,150.21
  6. Step 6: Final answer
    x = 1,392.30

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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.