Home / 3,118.24-4,677.92-927.12

Finding the Fourth Proportional to 3,118.24, 4,677.92 and 927.12

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Solution

The fourth proportional to 3,118.24, 4,677.92 and 927.12 is: 1,390.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.24 : 4,677.92 = 927.12 : x
  2. Step 2: Convert to fraction form
    3,118.24/4,677.92 = 927.12/x
  3. Step 3: Cross multiply
    3,118.24x = 4,677.92 × 927.12
  4. Step 4: Simplify right side
    3,118.24x = 4,336,993.19
  5. Step 5: Solve for x
    x = 4,336,993.19/3,118.24
  6. Step 6: Final answer
    x = 1,390.85

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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.