Home / 3,119.21-4,679.04-927.92

Finding the Fourth Proportional to 3,119.21, 4,679.04 and 927.92

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Solution

The fourth proportional to 3,119.21, 4,679.04 and 927.92 is: 1,391.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.21 : 4,679.04 = 927.92 : x
  2. Step 2: Convert to fraction form
    3,119.21/4,679.04 = 927.92/x
  3. Step 3: Cross multiply
    3,119.21x = 4,679.04 × 927.92
  4. Step 4: Simplify right side
    3,119.21x = 4,341,774.80
  5. Step 5: Solve for x
    x = 4,341,774.80/3,119.21
  6. Step 6: Final answer
    x = 1,391.95

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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.